California barrel cactus (Ferocactus cylindraceus)

Appearance: The fruit is yellow, fleshy, and hollow inside with many tiny black seeds. The remnants of the flower remain at the top, giving it a miniature pineapple-like appearance.
Edibility: The fruit and its seeds are edible and were traditionally used as a food source by indigenous peoples.
Taste: The flesh is described as having a mildly tart or acidic flavor, sometimes reminiscent of lemon or sorrel.
Harvesting: The fruit is generally spine-free, making it relatively easy to pick, though the cactus body itself has long, sharp spines. The yellow fruit typically ripens in late fall and winter, often between November and March.