Growing abiu from seed

We were recently fortunate to find some abiu fruit at the farmer's market, and I decided to try growing the seeds. The abiu is a tropical tree with round/oval fruit about the size of an medium orange. The inside is white and translucent, a bit like a pear, but has more of a creamy texture. They are sweet and quite tasty. We find them only occasionally at the market.
The seeds are almond shaped, but about twice a long. The first two germinated after about four weeks, and a third germinated about two weeks later.
A mature tree can produce from 100 to 1,000 fruit each year, and they can fruit multiple times per year. Hopefully, we'll get some fruit in a couple of years.

The stem is just starting to emerge from the seem

This plant has been growing for about two weeks