Not entirely true. A basic list of ingredients is not copyrightable, but the particular expression of the steps necessary to put them together is copyrightable. So you can’t copy and paste the recipe itself, but you can rewrite it. Which is why a lot of recipes intentionally put steps in a weird order or include far more personal info than necessary. Like greasing a pan in step one when you won’t need it until 3 hours later or the writer suddenly talking about their summer vacations with grandma in the middle of step four.