Dragonfruit is a holiday-exclusive placeable available to customers during Summer Luau in the sweet version of Papa's Crêperia. The placeable is unlocked on Day 2 of aforementioned holiday.
Dragonfruit is a standard mixable available in Mama's Frogurteria. It is unlocked on Day 6 of Mythic Fair.
Pitayas are a standard fruit available in Papa's Cobbleria ReSeasoned. The fruit is unlocked at Rank 11, with Dulcimer.