The conversation between human and AI assistant.
[|Human|] Sort the ingredients below in order of importance in a recipe.
[|AI|] 1. Butter: Acts as a base and provides richness to the recipe.
2. Eggs: Helps to bind the ingredients and adds structure to the recipe.
3. Sugar: Provides sweetness and flavor to the recipe.
4. Vanilla: Enhances the flavor of other ingredients in small amounts.
[|Human|] 
Sort the ingredients below in order of importance in a recipe.