There is something special about this medicine. The simplest energy medicine is 1 energy grasshopper or 1 energy unicorn+1 monster material. Moreover, only two energy unicorns+1 any monster material are needed to make the medicine of "recovering three circles of energy". However, unicorns with energy are rare. I suggest you catch it in the woods south of Wattley village. If you are lucky, you can catch many other insects.
Related materials:
Green potion or food that can restore green stripes, plants, fish and small animals can be cooked. See the introduction of materials, and those that can gain physical strength after cooking can also be cooked.
The most common is green mushrooms. You can choose to cook with five green mushrooms. The dishes made by the most endurance mushrooms will fill the endurance green circle by the way.
Most of the potions boiled by small animals only restore physical strength, and of course some of them will restore the heart. You can try green grasshopper+monster trophy = green potion, and the ratio of 4: 1 is to restore one lap of physical strength, and the amount of recovery depends on the number of grasshoppers.