The conversation between human and AI assistant.
[|Human|] Improve the given recipe by adding a new ingredient or changing the quantity or type of ingredients.
[|AI|] Here's a suggested improved recipe with the addition of a new ingredient and modification of the quantity of the existing ingredients:

3 eggs
3 tablespoons of sugar
2 tablespoons of melted butter
1 teaspoon of vanilla extract - this adds a delightful flavor to the recipe.
[|Human|] 
Improve the given recipe by adding a new ingredient or changing the quantity or type of ingredients.