The differences be fixed in the size, both are without cooking. I before preparing them immerse them in water for 24 hours, during this time they absorb water and expand duplicating this way his size in 100 % and in turn they throw a compound called cyanide that is a powerful poison. If they want to cook 1 kilogram, they must plunge 500 grams. This beginning applies for all the leguminous ones.
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From @mecarlo