The yellow-fleshed true African yam with higher beta-carotene content than white yam. All the properties of D. rotundata (resistant starch, dioscorin, potassium) plus the added benefit of provitamin A carotenoids. Available at West African and Caribbean grocery stores alongside white yam.
Available at West African grocery stores (typically labeled 'yellow yam') and Caribbean stores (Jamaican grocery stores). Less common than white yam but increasingly available in US cities with large African diaspora populations.
Guinea yam provides all the cardiovascular, gut, and hormonal benefits of white yam (dioscorin ACE inhibition, resistant starch prebiotic effect, diosgenin phytosterol hormonal modulation) plus significant beta-carotene — the provitamin A that converts to retinol in the body. Vitamin A deficiency affects an estimated 15-20% of Black Americans in food-insecure households, contributing to impaired immune function, poor wound healing, and increased susceptibility to respiratory infection. Substituting yellow guinea yam for white yam where available provides a meaningful beta-carotene upgrade at identical cultural preparation cost.
Identical preparation to white African yam: peel (remove thick brown bark and inner layer), boil cubed 20-30 minutes, pound for fufu, roast, or incorporate into stews. The yellow color is visible in the boiled flesh. Available fresh and frozen at West African and Caribbean grocery stores.
Free, no account needed to ask.