Black turtle bean
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The black turtle bean is a small, shiny variety of the common bean used in many cuisines. Like all varieties of the common bean, it is native to the Americas, but has been introduced around the world.
Black Turtle Bean
Cooked black beans
Cooked whole black turtle beans on tortillas
A bean dip from black beans
Anthocyanin
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Anthocyanins, also called anthocyans, are water-soluble vacuolar pigments that, depending on their pH, may appear red, pink, purple, blue, or black. Food plants rich in anthocyanins include blueberrie
Black turtle bean
…soup), as a broth (caldo de frijol, bean broth) or to season or color other dishes (aforementioned gallo pinto, for example). Black turtle beans contain anthocyanins in their dried seed coats, giving the beans their dark color. Pinto bean…
Anthocyanins give these pansies their dark purple pigmentation.
Cross-section of red cabbage
Aronia berries (Aronia melanocarpa), a rich source of anthocyanins
Reds and purples of autumn leaves of the European bilberry result from production of anthocyanins.