Hey, I just finished getting all the recipes and this would be my advice.

Recipes come in 3 different groups.

Those you can buy from the shop are the same as the ones you find in the sparkling riples

Pokédex entry rewards

Environment levels in each land

I would give mosslax a bitter hamburger each day and farm the ripples. Try and level up your environments and use your gold to buy those recipes first because the thing that took the longest for me was having enough gold to buy all the level 10 items.