Black Beans Scientific Name and How to Cook Them

Black beans, also called turtle beans, are the dark seeds of Phaseolus vulgaris, the common bean species. This simple stovetop recipe simmers dried black beans with aromatics until creamy and tender, then finishes them with lime; serve them as a side dish or spoon them over rice.

Ingredients

1 pound dried black beans (454 g), picked over and rinsed
8 cups water (1.9 L), plus more as needed
1 tablespoon olive oil (15 ml)
1 medium yellow onion, finely chopped (about 1 cup/150 g)
1 medium green bell pepper, finely chopped (about 1 cup/150 g)
4 garlic cloves, minced (about 12 g)
1 bay leaf
1 teaspoon ground cumin (2 g)
1 teaspoon dried oregano (1 g)
1 teaspoon fine salt (6 g), plus more to taste
¼ teaspoon ground black pepper (0.5 g)
2 tablespoons fresh lime juice (30 ml), or to taste
2 tablespoons chopped fresh cilantro (8 g), optional

Instructions

Sort and rinse the beans. Spread the dried beans on a tray and remove any small stones or damaged beans. Rinse in a colander under cool running water. No soaking is required for this method; allowing extra cooking time is more reliable than assuming every batch softens at the same rate.
Start the aromatics. Heat the olive oil in a large, heavy pot over medium heat. Add the onion and bell pepper and cook for 6 to 8 minutes, stirring now and then, until softened. Add the garlic, cumin, oregano, black pepper and bay leaf; stir for 30 seconds, just until fragrant.
Add beans and water. Stir in the rinsed beans and 8 cups (1.9 L) water. Bring the pot to a boil, then reduce the heat so the liquid maintains a gentle simmer. Partially cover the pot, leaving a small gap for steam to escape. Do not add the lime juice yet: acidity can slow softening.
Simmer until tender. Cook for 1 hour 15 minutes to 1 hour 45 minutes, stirring every 20 to 30 minutes. Keep the beans covered by liquid; add boiling water in ½-cup (120 ml) increments if the level drops. Start checking at 1 hour 15 minutes. The beans are ready when they are tender all the way through and creamy inside, not chalky or firm. Older beans can take longer, so continue simmering and checking every 10 to 15 minutes as needed.
Season and finish. Stir in the salt and cook for 10 minutes so the seasoning can work into the beans. Remove the bay leaf. For a thicker, creamier broth, mash about ½ cup (85 g) of beans against the side of the pot and stir them back in. Turn off the heat, add the lime juice, and taste; adjust salt or lime to suit. Scatter with cilantro if using.

Tips

Keep the simmer gentle. A vigorous boil can split the skins before the centers become tender. A few small bubbles are enough, and occasional stirring helps prevent sticking.
Give old beans more time. Dried beans that have been stored for a long time may need substantially longer to soften. If they remain firm, keep simmering and add water when needed rather than increasing the heat sharply.
Adjust salt and acid at the end. Salt is included here during the final part of cooking for predictable seasoning. Lime goes in after the beans soften because an acidic cooking liquid can delay tenderness.
Use canned beans for a quicker version. Replace the dried beans and water with three 15-ounce cans (about 425 g each), drained and rinsed, plus 1 cup (240 ml) water. Simmer with the aromatics for 15 to 20 minutes; the result is less starchy and needs much less cooking.

Serving Suggestions

Serve the beans warm in bowls with steamed white or brown rice, or offer them as a substantial side with roasted vegetables, grilled corn or sautéed greens. They also work in tacos, burrito bowls and grain bowls. Add sliced avocado, chopped onion, cilantro, hot sauce or a spoonful of plain yogurt at the table. If you want a more brothy bowl, ladle the cooking liquid along with the beans; for a thicker topping, mash a little more of the pot before serving.

Variations

Smoky beans: Add ½ teaspoon (1 g) smoked paprika with the cumin. For gentle heat, use a pinch of cayenne or one seeded, minced jalapeño cooked with the onion.

More herbal: Replace the oregano with 1 teaspoon (1 g) dried thyme, or add a few sprigs of fresh oregano while simmering and remove them with the bay leaf. Cilantro is optional; parsley can provide a fresh finish, though it tastes different.

Brothy black beans: Leave the beans whole and add 1 to 2 cups (240 to 480 ml) hot water near the end. Taste again for salt and lime because the extra liquid dilutes the seasoning.

Cooked onion-free version: Leave out the onion and pepper if needed, and use an additional tablespoon (15 ml) olive oil with the garlic and spices. The beans will have a simpler, less sweet aromatic base.

Storage and Reheating

Transfer leftovers to shallow containers and refrigerate within 2 hours of cooking. Keep them refrigerated for 3 to 4 days. The beans and their liquid may thicken as they chill; add a splash of water when reheating. Warm on the stovetop over medium-low heat, stirring occasionally, until steaming throughout. For microwave reheating, cover loosely, stir halfway through, and heat until evenly hot. USDA FSIS guidance is to reheat leftovers to 165°F (74°C); use a food thermometer to check. Freeze cooled beans and cooking liquid in airtight freezer-safe containers for up to 3 months for best quality, then thaw in the refrigerator and reheat thoroughly.

Frequently Asked Questions

What is the scientific name for black beans?
Black beans are a variety of the common bean, Phaseolus vulgaris. They are also known as black turtle beans because of their dark color and shape. The scientific name refers to the species, not only to black-colored varieties.

Do I have to soak dried black beans?
No. This recipe cooks them directly in water, which avoids a soaking step. Soaking overnight can shorten simmering time, but the exact time saved depends on the beans’ age; drain and rinse soaked beans, then begin checking for tenderness earlier.

Why are my black beans still hard?
They may need more time, especially if the beans are old, or they may have been cooked in acidic liquid. Keep the pot at a gentle simmer, add hot water if needed, and wait to add lime, vinegar or tomatoes until the beans are tender.

Can I make this recipe with canned black beans?
Yes. Drain and rinse three 15-ounce (425 g) cans, then simmer them with the cooked aromatics and 1 cup (240 ml) water for 15 to 20 minutes. Since canned beans are already cooked, avoid a long simmer that could make them break apart.

Can I cook black beans in a pressure cooker?
Yes, but cooking times vary with the appliance, bean age and whether they were soaked. Follow the manufacturer’s instructions for dried beans and the cooker’s maximum fill level; do not fill a pressure cooker beyond its limit. Season with lime after pressure cooking, once the beans are tender.

Are black beans the same as kidney beans?
No. Both are varieties of Phaseolus vulgaris, but they differ in color, size and texture. Black beans are smaller and often become creamy when cooked, while kidney beans are larger and hold a firmer shape.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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