Chufa (Earth Almond): Tasty Tubers but Weedy Risk

"Grass nuts" your great-grandmother grew were likely chufa (Cyperus esculentus var. sativus), a sedge with sweet, almond-coconut flavored tubers. However, its wild cousin, yellow nutsedge (Cyperus esculentus), is a notorious lawn and garden weed. Seed purchases often contain both, making cultivation risky.

Recommendation: Avoid planting chufa; the weed potential outweighs the culinary novelty.