Food Processor Buying Guide: What to Know Before You Buy

Minimum wattage depends on use. For chopping soft vegetables, herbs, and making hummus or salsa: 250 to 400W is adequate, the Hamilton Beach 70730 at 450W handles these tasks without motor strain. For slicing harder vegetables (carrots, beets, sweet potatoes) and shredding firm cheese: 600 to 700W provides noticeably smoother operation and more consistent results without stalling. For sustained dough kneading, nut butter from raw nuts, and processing dense or fibrous ingredients: 900 to 1,200W is appropriate, the Cuisinart DFP-14BCWN at 1,200W is the benchmark for this level. Key rule: the wattage rating is peak power, not continuous power. A 700W budget motor runs at 350 to 500W sustained; a 700W Cuisinart motor runs at 700W sustained for minutes at a time.

A slicing disc (also called a slicing plate) uses a single exposed straight blade to cut food into uniform thin rounds as it passes through the feed tube under gravity. Adjustable slicing discs produce slices from 1mm to 6mm thick by rotating the disc to the marked position. A shredding disc (also called a grating disc) uses multiple small holes or serrated openings to shred food into thin strands as it passes through. Fine shredding disc: produces thin strands similar to a box grater's fine side, appropriate for parmesan, cheddar, and carrots for coleslaw. Coarse shredding disc: produces thicker strands similar to a box grater's large side, appropriate for potatoes, zucchini, and mozzarella. Both discs are typically included with 7-cup and larger food processors; mini food processors (4-cup and under) typically include only the S-blade.

Most food processor work bowls are made from BPA-free polycarbonate (hard, clear plastic). Higher-end models (Breville Sous Chef, Magimix) use thicker-walled bowls that vibrate less and feel more premium. The material difference matters in two ways: (1) Scratch resistance, thin polycarbonate scratches more easily from metal tools and abrasive ingredients, which makes the bowl look cloudy over time and can harbor bacteria in scratches; (2) Dishwasher compatibility, all modern food processor bowls are top-rack dishwasher safe, but thinner polycarbonate discolors faster from tomato-based foods and repeated dishwasher cycles. Bowl lids are typically the same material as the bowl. Some premium models (KitchenAid, Breville) include rubber grip handles on the bowl that make lifting easier.

The feed tube is the vertical opening in the food processor lid through which food is added during processing. Wide feed tube: 3 to 4 inches in diameter, accommodates whole onions, tomatoes, beets, and large carrots without pre-cutting. Standard feed tube: 2 to 2.5 inches in diameter, requires cutting most vegetables to fit. The feed tube matters most for slicing: food dropped through the feed tube rests on the slicing disc and slices into uniform rounds as the motor turns. A narrow feed tube means pre-cutting every potato, beet, or large carrot before slicing, adding time to each meal prep session. Premium models (Cuisinart DFP-14BCWN, Breville Sous Chef) include a dual feed tube with a wider outer ring and a narrower inner tube for small ingredients like cherry tomatoes. Minimum recommendation: a tube wide enough to fit a large onion without cutting.