Use Firefly Jar at Pizza PitAgain, we're dealing with a fairly easy challenge to complete. However, you will have to proceed in two steps. The first one, find fireflies (we often find some near Weeping Woods, but we can collect some everywhere), then go to Pizza Pit to use them. If you want to save time, we advise you to land north of Colossal Crops, since we often find them here, and that Pizza Pit is next to it.
The second step is therefore the easiest and fastest, unless you don't know where this place is. As said above, it is north of Colossal Crops, right next to the orchard, a notable place well known to the community. Once there, just use the firefly jar, whether there are enemies or not. Launch it inside the store, to be sure that the action is taken into account. Be careful, the store will ignite, so don't throw it at your feet.
You can find the exact location of Pizza Pit on the map below.