While food processors can chop vegetables, they are not ideal for precise dicing. They tend to produce uneven results and can easily over-process food into a puree if you're not careful.
Using a food processor for dicing requires a specific technique and often a dicing attachment, if available for your model. Here's a breakdown:
Preparation: Cut the vegetables into roughly equal-sized pieces, about 1-2 inches. This helps ensure more uniform results.
Pulse Technique: The key to avoiding a puree is to use short, controlled pulses. A single, long burst will almost certainly over-process the food.
Observe Carefully: After each pulse, check the consistency. You're aiming for small, relatively uniform pieces. If some pieces are still large, pulse again briefly.
Dicing Attachment (If Available): Some food processors come with a dicing attachment. This attachment typically consists of a grid that the food is forced through, creating more uniform dice. Follow the manufacturer's instructions for using this attachment.
Limitations: Food processors are best suited for chopping, mincing, and pureeing. Dicing is a secondary function, and the results are rarely as precise as hand-dicing. Softer vegetables like tomatoes are particularly difficult to dice in a food processor without turning them into mush. Harder vegetables like carrots and potatoes are more suitable, but still require careful monitoring.
For best results, chill your vegetables before processing. Cold vegetables hold their shape better and are less likely to turn into a paste. Also, process in small batches to avoid overcrowding the bowl, which leads to uneven dicing.