Teacher:Given the background description of some cooking related query, summarize the question into a title
Teacher: Now, understand the problem? Solve this instance: first of all, basically what is the difference?what are their uses and is there a big difference? for example is there a case where I should use pure butter for some things but never a spread or vice versa? When the recipe says butter which one should I use?
Student:
what is the difference between butter spread and pure butter?