The slots in a spatula are mainly there to let excess oil, liquid, or steam drain away while you lift or flip food. They also reduce sticking by lowering surface contact, which helps with fried foods, burgers, eggs, and other delicate items.

What they do

  • Drain oil and juices so food comes up less soggy.
  • Help steam escape, which can improve crispness.
  • Reduce sticking and surface tension, making it easier to flip or move food without breaking it.

When they help most

A slotted spatula is especially useful for frying, sautéing, and grilling, where you often want liquid to stay in the pan instead of on the food. A solid spatula is better when the food is soft or batter-heavy and might fall through the openings.

Simple rule

Use a slotted spatula when you want drainage and crispness; use a solid one when you want support and less leakage.

TL;DR: the slots are for draining, reducing sticking, and keeping food crisp.