diff --git a/yarn-project/acir-simulator/src/acvm/acvm.ts b/yarn-project/acir-simulator/src/acvm/acvm.ts
index d6d9ed81e8a..f5cbc795882 100644
--- a/yarn-project/acir-simulator/src/acvm/acvm.ts
+++ b/yarn-project/acir-simulator/src/acvm/acvm.ts
@@ -85,7 +85,7 @@ export async function acvm(
       const result = await oracleFunction.call(callback, ...args);
       return [result];
     } catch (err: any) {
-      logger(`Error in oracle callback ${name}: ${err.message ?? err ?? 'Unknown'}`);
+      logger.error(`Error in oracle callback ${name}: ${err.message ?? err ?? 'Unknown'}`);
       throw err;
     }
   });
diff --git a/yarn-project/acir-simulator/src/client/simulator.ts b/yarn-project/acir-simulator/src/client/simulator.ts
index e1281dc003d..b177dad2941 100644
--- a/yarn-project/acir-simulator/src/client/simulator.ts
+++ b/yarn-project/acir-simulator/src/client/simulator.ts
@@ -48,7 +48,7 @@ export class AcirSimulator {
     }
 
     if (request.origin !== contractAddress) {
-      this.log(`WARN: Request origin does not match contract address in simulation`);
+      this.log.warn('Request origin does not match contract address in simulation');
     }
 
     const curve = await Grumpkin.new();
diff --git a/yarn-project/acir-simulator/src/client/unconstrained_execution.ts b/yarn-project/acir-simulator/src/client/unconstrained_execution.ts
index bc5d36b3fe0..dcd5b45af6d 100644
--- a/yarn-project/acir-simulator/src/client/unconstrained_execution.ts
+++ b/yarn-project/acir-simulator/src/client/unconstrained_execution.ts
@@ -59,7 +59,7 @@ export class UnconstrainedFunctionExecution {
       storageRead: async ([slot], [numberOfElements]) => {
         if (!aztecNode) {
           const errMsg = `Aztec node is undefined, cannot read storage`;
-          this.log(errMsg);
+          this.log.error(errMsg);
           throw new Error(errMsg);
         }
 
diff --git a/yarn-project/aztec-rpc/src/synchroniser/synchroniser.ts b/yarn-project/aztec-rpc/src/synchroniser/synchroniser.ts
index 140d757a7f1..dc9a835c70d 100644
--- a/yarn-project/aztec-rpc/src/synchroniser/synchroniser.ts
+++ b/yarn-project/aztec-rpc/src/synchroniser/synchroniser.ts
@@ -132,7 +132,7 @@ export class Synchroniser {
 
       this.synchedToBlock = latestBlock.block.number;
     } catch (err) {
-      this.log(err);
+      this.log.error(err);
       await this.interruptableSleep.sleep(retryInterval);
     }
   }
@@ -186,7 +186,7 @@ export class Synchroniser {
         this.noteProcessors.push(noteProcessor);
       }
     } catch (err) {
-      this.log(err);
+      this.log.error(err);
       await this.interruptableSleep.sleep(retryInterval);
     }
   }
diff --git a/yarn-project/aztec-sandbox/src/examples/private_token_contract.ts b/yarn-project/aztec-sandbox/src/examples/private_token_contract.ts
index 909ed1b4f1a..32888a67486 100644
--- a/yarn-project/aztec-sandbox/src/examples/private_token_contract.ts
+++ b/yarn-project/aztec-sandbox/src/examples/private_token_contract.ts
@@ -82,6 +82,6 @@ main()
     process.exit(0);
   })
   .catch(err => {
-    logger('Error in main fn: ', err);
+    logger.error('Error in main fn: ', err);
     process.exit(1);
   });
diff --git a/yarn-project/aztec-sandbox/src/examples/uniswap_trade_on_l1_from_l2.ts b/yarn-project/aztec-sandbox/src/examples/uniswap_trade_on_l1_from_l2.ts
index 2fa27813c68..d7ef5a620e1 100644
--- a/yarn-project/aztec-sandbox/src/examples/uniswap_trade_on_l1_from_l2.ts
+++ b/yarn-project/aztec-sandbox/src/examples/uniswap_trade_on_l1_from_l2.ts
@@ -333,6 +333,6 @@ main()
     process.exit(0);
   })
   .catch(err => {
-    logger('Error in main fn: ', err);
+    logger.error('Error in main fn: ', err);
     process.exit(1);
   });
diff --git a/yarn-project/end-to-end/src/fixtures/utils.ts b/yarn-project/end-to-end/src/fixtures/utils.ts
index be7fb9c51cf..b157e5d8779 100644
--- a/yarn-project/end-to-end/src/fixtures/utils.ts
+++ b/yarn-project/end-to-end/src/fixtures/utils.ts
@@ -49,7 +49,7 @@ const { SANDBOX_URL = '' } = process.env;
 export const waitForRPCServer = async (rpcServer: AztecRPC, logger: DebugLogger) => {
   await retryUntil(async () => {
     try {
-      logger('Attmpting to contact RPC Server...');
+      logger('Attempting to contact RPC Server...');
       await rpcServer.getNodeInfo();
       return true;
     } catch (error) {
diff --git a/yarn-project/foundation/src/fifo/bounded_serial_queue.ts b/yarn-project/foundation/src/fifo/bounded_serial_queue.ts
index 035ce6eee98..79e83d19e0c 100644
--- a/yarn-project/foundation/src/fifo/bounded_serial_queue.ts
+++ b/yarn-project/foundation/src/fifo/bounded_serial_queue.ts
@@ -71,7 +71,7 @@ export class BoundedSerialQueue {
         }
       })
       .catch(err => {
-        this.log('BoundedSerialQueue handler exception:', err);
+        this.log.error('BoundedSerialQueue handler exception:', err);
       });
   }
 
diff --git a/yarn-project/foundation/src/fifo/memory_fifo.ts b/yarn-project/foundation/src/fifo/memory_fifo.ts
index 6053df46a27..c6233075dae 100644
--- a/yarn-project/foundation/src/fifo/memory_fifo.ts
+++ b/yarn-project/foundation/src/fifo/memory_fifo.ts
@@ -108,7 +108,7 @@ export class MemoryFifo<T> {
         await handler(item);
       }
     } catch (err) {
-      this.log('Queue handler exception:', err);
+      this.log.error('Queue handler exception:', err);
     }
   }
 }
diff --git a/yarn-project/foundation/src/json-rpc/server/json_rpc_server.ts b/yarn-project/foundation/src/json-rpc/server/json_rpc_server.ts
index f217fee70dc..36212c1c310 100644
--- a/yarn-project/foundation/src/json-rpc/server/json_rpc_server.ts
+++ b/yarn-project/foundation/src/json-rpc/server/json_rpc_server.ts
@@ -38,14 +38,14 @@ export class JsonRpcServer {
       try {
         await next();
       } catch (err: any) {
-        this.log(err);
+        this.log.error(err);
         ctx.status = 400;
         ctx.body = { error: err.message };
       }
     };
     const app = new Koa();
     app.on('error', error => {
-      this.log(`KOA app-level error. ${convertBigintsInObj({ error })}`);
+      this.log.error(`KOA app-level error. ${JSON.stringify({ error })}`);
     });
     app.use(compress({ br: false } as any));
     app.use(bodyParser());
diff --git a/yarn-project/foundation/src/retry/index.ts b/yarn-project/foundation/src/retry/index.ts
index 37200bef6d9..2aea88749ab 100644
--- a/yarn-project/foundation/src/retry/index.ts
+++ b/yarn-project/foundation/src/retry/index.ts
@@ -62,7 +62,7 @@ export async function retry<Result>(
         throw err;
       }
       log(`${name} failed. Will retry in ${s}s...`);
-      log(err);
+      log.error(err);
       await sleep(s * 1000);
       continue;
     }
diff --git a/yarn-project/merkle-tree/src/standard_indexed_tree/standard_indexed_tree.ts b/yarn-project/merkle-tree/src/standard_indexed_tree/standard_indexed_tree.ts
index 909dd134dfb..743840fe217 100644
--- a/yarn-project/merkle-tree/src/standard_indexed_tree/standard_indexed_tree.ts
+++ b/yarn-project/merkle-tree/src/standard_indexed_tree/standard_indexed_tree.ts
@@ -251,7 +251,7 @@ export class StandardIndexedTree extends TreeBase implements IndexedTree {
           resolve();
         })
         .on('error', function () {
-          log('stream error');
+          log.error('stream error');
           reject();
         });
     });
diff --git a/yarn-project/p2p-bootstrap/src/index.ts b/yarn-project/p2p-bootstrap/src/index.ts
index 91a83afb2b0..3b1ccc3080d 100644
--- a/yarn-project/p2p-bootstrap/src/index.ts
+++ b/yarn-project/p2p-bootstrap/src/index.ts
@@ -25,5 +25,5 @@ async function main() {
 }
 
 main().catch(err => {
-  logger(err);
+  logger.error(err);
 });
diff --git a/yarn-project/p2p/src/service/libp2p_service.ts b/yarn-project/p2p/src/service/libp2p_service.ts
index 9abbe7e0862..6f9ea3a1491 100644
--- a/yarn-project/p2p/src/service/libp2p_service.ts
+++ b/yarn-project/p2p/src/service/libp2p_service.ts
@@ -215,7 +215,7 @@ export class LibP2PService implements P2PService {
       }
       await this.processMessage(message, peer);
     } catch (err) {
-      this.logger(
+      this.logger.error(
         `Failed to handle received message from peer ${incomingStreamData.connection.remotePeer.toString()}`,
         err,
       );
@@ -274,7 +274,7 @@ export class LibP2PService implements P2PService {
       }
       await this.sendGetTransactionsMessageToPeer(txHashes, peerId);
     } catch (err) {
-      this.logger(`Failed to process received tx hashes`, err);
+      this.logger.error(`Failed to process received tx hashes`, err);
     }
   }
 
@@ -290,7 +290,7 @@ export class LibP2PService implements P2PService {
       }
       await this.sendTransactionsMessageToPeer(txs, peerId);
     } catch (err) {
-      this.logger(`Failed to process get txs request`, err);
+      this.logger.error(`Failed to process get txs request`, err);
     }
   }
 
@@ -303,7 +303,7 @@ export class LibP2PService implements P2PService {
         await this.processTxFromPeer(tx, peerId);
       }
     } catch (err) {
-      this.logger(`Failed to process pooled transactions message`, err);
+      this.logger.error(`Failed to process pooled transactions message`, err);
     }
   }
 
@@ -332,7 +332,7 @@ export class LibP2PService implements P2PService {
         await this.sendRawMessageToPeer(payload, peer);
         this.knownTxLookup.addPeerForTx(peer, txHashString);
       } catch (err) {
-        this.logger(`Failed to send txs to peer ${peer.toString()}`, err);
+        this.logger.error(`Failed to send txs to peer ${peer.toString()}`, err);
         continue;
       }
     }
@@ -347,7 +347,7 @@ export class LibP2PService implements P2PService {
       const message = createTransactionHashesMessage(hashes);
       await this.sendRawMessageToPeer(new Uint8Array(message), peer);
     } catch (err) {
-      this.logger(`Failed to send tx hashes to peer ${peer.toString()}`, err);
+      this.logger.error(`Failed to send tx hashes to peer ${peer.toString()}`, err);
     }
   }
 
@@ -356,7 +356,7 @@ export class LibP2PService implements P2PService {
       const message = createGetTransactionsRequestMessage(hashes);
       await this.sendRawMessageToPeer(new Uint8Array(message), peer);
     } catch (err) {
-      this.logger(`Failed to send tx request to peer ${peer.toString()}`, err);
+      this.logger.error(`Failed to send tx request to peer ${peer.toString()}`, err);
     }
   }
 
diff --git a/yarn-project/rollup-provider/src/app.ts b/yarn-project/rollup-provider/src/app.ts
index 453960d6d90..f2efa9e8bf1 100644
--- a/yarn-project/rollup-provider/src/app.ts
+++ b/yarn-project/rollup-provider/src/app.ts
@@ -31,7 +31,7 @@ export function appFactory(node: AztecNode, prefix: string) {
     try {
       await next();
     } catch (err: any) {
-      logger(err);
+      logger.error(err);
       ctx.status = 400;
       ctx.body = { error: err.message };
     }
@@ -258,7 +258,7 @@ export function appFactory(node: AztecNode, prefix: string) {
 
   const app = new Koa();
   app.on('error', error => {
-    logger(`KOA app-level error. ${JSON.stringify({ error })}`);
+    logger.error(`KOA app-level error. ${JSON.stringify({ error })}`);
   });
   app.proxy = true;
   app.use(exceptionHandler);
diff --git a/yarn-project/rollup-provider/src/index.ts b/yarn-project/rollup-provider/src/index.ts
index a9b431e8e9f..b64dcd6b306 100644
--- a/yarn-project/rollup-provider/src/index.ts
+++ b/yarn-project/rollup-provider/src/index.ts
@@ -35,6 +35,6 @@ async function main() {
 }
 
 main().catch(err => {
-  logger(err);
+  logger.error(err);
   process.exit(1);
 });
diff --git a/yarn-project/sequencer-client/src/publisher/l1-publisher.ts b/yarn-project/sequencer-client/src/publisher/l1-publisher.ts
index 4b0ca9d8ee6..6100d7b87b4 100644
--- a/yarn-project/sequencer-client/src/publisher/l1-publisher.ts
+++ b/yarn-project/sequencer-client/src/publisher/l1-publisher.ts
@@ -223,7 +223,7 @@ export class L1Publisher implements L2BlockReceiver {
       try {
         return await this.txSender.sendEmitContractDeploymentTx(l2BlockNum, l2BlockHash, contractData);
       } catch (err) {
-        this.log(`Error sending contract data to L1`, err);
+        this.log.error(`Error sending contract data to L1`, err);
         await this.sleepOrInterrupted();
       }
     }
@@ -234,7 +234,7 @@ export class L1Publisher implements L2BlockReceiver {
       try {
         return await this.txSender.getTransactionReceipt(txHash);
       } catch (err) {
-        //this.log(`Error getting tx receipt`, err);
+        //this.log.error(`Error getting tx receipt`, err);
         await this.sleepOrInterrupted();
       }
     }
diff --git a/yarn-project/sequencer-client/src/sequencer/public_processor.ts b/yarn-project/sequencer-client/src/sequencer/public_processor.ts
index 19e1d29b691..eacdac37579 100644
--- a/yarn-project/sequencer-client/src/sequencer/public_processor.ts
+++ b/yarn-project/sequencer-client/src/sequencer/public_processor.ts
@@ -105,7 +105,7 @@ export class PublicProcessor {
       try {
         result.push(await this.processTx(tx));
       } catch (err) {
-        this.log(`Error processing tx ${await tx.getTxHash()}: ${err}`);
+        this.log.error(`Error processing tx ${await tx.getTxHash()}: ${err}`);
         failed.push(tx);
       }
     }
diff --git a/yarn-project/types/src/l2_block_downloader/l2_block_downloader.ts b/yarn-project/types/src/l2_block_downloader/l2_block_downloader.ts
index 7d7b6085ba5..37ddc85650f 100644
--- a/yarn-project/types/src/l2_block_downloader/l2_block_downloader.ts
+++ b/yarn-project/types/src/l2_block_downloader/l2_block_downloader.ts
@@ -53,7 +53,7 @@ export class L2BlockDownloader {
           this.queue.put(blocks);
           this.from += blocks.length;
         } catch (err) {
-          log(err);
+          log.error(err);
           await this.interruptableSleep.sleep(this.pollIntervalMS);
         }
       }
diff --git a/yarn-project/world-state/src/synchroniser/server_world_state_synchroniser.test.ts b/yarn-project/world-state/src/synchroniser/server_world_state_synchroniser.test.ts
index 0270e194c58..ce4e592d7cd 100644
--- a/yarn-project/world-state/src/synchroniser/server_world_state_synchroniser.test.ts
+++ b/yarn-project/world-state/src/synchroniser/server_world_state_synchroniser.test.ts
@@ -145,7 +145,7 @@ describe('server_world_state_synchroniser', () => {
     nextBlocks = [getMockBlock(currentBlockNumber + 1)];
 
     // start the sync process but don't await
-    server.start().catch(err => log('Sync not completed: ', err));
+    server.start().catch(err => log.error('Sync not completed: ', err));
 
     // now setup a loop to monitor the sync progress and push new blocks in
     while (currentBlockNumber <= LATEST_BLOCK_NUMBER) {