STORY OF SEASONS: Pioneers of Olive Town

As with the other cumulative trophies, this is for cooking twenty times. You can either choose to cook twenty different recipes, awarding you more experience for first-time completion of each, or choose the same recipe and do it 20 times, or some mixture therein. If you remake a recipe, you'll receive a smaller amount of experience than before, but you may end up with a lack of ingredient space to cook some recipes later on.

Try not to worry about this and it will come naturally as you try to level the Cooking skill up. Later on, when you're trying to aim for the next level and you're struggling to gather some specific ingredients, you can simply choose the Grilled Fish entree and choose from the plethora of fish you will be gathering to level Fishing as the source. Rinse and repeat to clear your inventory out and make some decent dishes. From there, you can either sell them for a pittance of gold, or you can use them as gifts to befriend the townspeople. A surprising number of folks within Olive Town like Grilled Fish.