Appearance:

Custard apples are generally round or heart-shaped, with a diameter ranging from 5 to 10 cm. They have a pale green or greenish-yellow skin, often with a white, powdery bloom when ripe. The fruit is often marked with many round protuberances, giving it a knobby or quilted appearance. 

Texture and Flavor:

The flesh is soft, creamy, and custard-like in consistency. It is sweet and aromatic, with a flavor that is sometimes described as a blend of strawberry and pineapple. 

Seeds:

The flesh contains dark brown or black, shiny seeds that are oblong in shape and range in length from 1.3 to 1.6 cm. 

Botanical Background:

Custard apples are the fruit of the Annona squamosa tree, also known as the sweetsop or sugar apple. The tree is a small, well-branched tree or shrub from the Annonaceae family.