Yes, pineapple guava is indeed a fruit.
Pineapple guava, also known as feijoa, is a delicious fruit that is known for its unique flavor, which combines elements of pineapple, guava, and mint. The reference text even mentions enjoying "the delicious fruits," further confirming its status as a fruit. A key characteristic of feijoa is that it is typically not picked directly from the tree. Instead, optimal ripeness and flavor are achieved when the fruit falls naturally. This distinguishes it from many other commercially grown fruits.
