I was using a food processor with powerful blades and the spoon slid through small opening at top scratched heavily. Is preparing safe to eat?

I understand your concern. It's definitely not ideal to have a scratched food processor, especially if the blades are powerful.

Here's why it might be a concern:

* Metal shavings: The scratch could have resulted in tiny metal shavings getting into the food. While small amounts of metal are generally not a cause for immediate concern, it's not something you want to ingest regularly.

* Bacterial growth: The scratch could provide a surface where bacteria can accumulate, especially if the food processor isn't cleaned thoroughly.

Here's what I recommend:

1. Thorough cleaning: Disassemble your food processor and clean it very carefully, focusing on the area around the scratch. You can use a toothbrush or a small brush to get into the crevices.

2. Inspect the scratch: Look closely at the scratch. If it's deep or jagged, it might be best to replace the food processor.

3. Use a food-safe sealant: If the scratch isn't too deep and you're comfortable using the food processor, consider applying a food-safe sealant to the area. This can help prevent rust and bacterial growth. You can find these sealants at most hardware stores.

4. Monitor for signs of rust: Keep an eye on the scratched area for any signs of rust. If rust appears, it's best to replace the food processor.

Ultimately, the decision of whether or not to use your food processor is up to you. If you're uncomfortable with the scratch or have any concerns about safety, it's best to err on the side of caution and replace the appliance.