Sifting flour. Sautéing spices “to release the flavor” and then adding them to stew where they’ll simmer for an hour or more. Pretending “restaurant quality” is anything besides twice as much butter and salt as you’d dare use at home. “One tablespoon of olive oil” to brown absurd amounts of meat at high heat. Once you start recognizing recipe BS, you see it everywhere.
Sifting flour is to get the weevils out ;)
I only sift flour if I'm making scones, it seems to make a difference. I'm not a cakey person, I don't bake cakes. It's cake bakers that tend to care about sifting.