From the Super Mario Wiki
A Healthy Salad is an item found in Paper Mario: The Thousand-Year Door. The item can be created by cooking a Turtley Leaf with a Horsetail. Healthy Salads recover fifteen FP and cure Poison and other status ailments as well.
In Super Paper Mario, Saffron can cook a Healthy Salad from a Fresh Veggie. Using it restores fifteen HP and cures Poison. However, it looks like a normal salad without the middle part. That form in this game is called the Veggie Set.
Names in other languages
||(Paper Mario: The Thousand-Year Door): Ensalada Saludable
(Super Paper Mario): Ensalada Verde