Tips to make level up: 1-10 You can use riceballs, and crispy bacon 10-15 You can use melon juice and/or crab croquette 15-23 I've been using crab croquette. (Crab is easy to farm if you eat Mushroom salad to boost luck and take Fred, Siela, and the extra character you get from talking to Alfine on a regular basis)