For pots it doesn’t really make much difference, but cooking on a stainless steel frying pan is very different, especially when cooking eggs, fish etc. You need

For pots it doesn’t really make much difference, but cooking on a stainless steel frying pan is very different, especially when cooking eggs, fish etc. You need to heat the pan first, add a bit of oil and onion to the hot pan and spread that around (something in the onion creates a non-stick effect) before adding the eggs.