Final answer:
Experimentation is the key technique for improving the lemon cake recipe.
Explanation:
Experimentation is the technique that would be most appropriate for improving the lemon cake recipe. By testing different variations of the recipe through controlled experiments, the baker can determine the optimal adjustments for enhancing the flavor and texture of the cake.
Learn more about Experimentation in recipe improvement here:
https://brainly.com/question/38062710
