Calories in Beans, Dry, Flor de Mayo (0% moisture)
This pink Mexican heirloom hides a heat-stable lectin that slow cookers can't destroy.
What makes beans so powerful?
Flor de Mayo—'May Flower'—is a traditional Mexican landrace of the common bean (Phaseolus vulgaris), prized in central Mexico for its creamy texture and pale pink, speckled coat. Like all common beans, it stores nitrogen as phaseolin, a globulin protein that accounts for roughly half of its total protein content. Less well known is that raw Flor de Mayo beans carry phytohaemagglutinin (PHA), a lectin that binds to carbohydrate molecules on intestinal cell walls and can cause severe nausea, vomiting, and diarrhea within hours of consumption. The CDC has documented poisoning outbreaks traced to beans cooked in slow cookers at sub-boiling temperatures, because PHA denatures only when beans are held at a rolling boil for at least ten minutes. Soaking alone does not remove it. This is why traditional Mexican bean cookery—long simmering after an initial boil—is not just culinary preference but a practical detoxification method refined over centuries of observation.
Soak Flor de Mayo beans overnight (at least 8 hours) in plenty of water, then drain and rinse. Bring to a full rolling boil for at least 10 minutes before reducing to a simmer—this step is non-negotiable for lectin safety. Cook until tender, roughly 1.5 to 2 hours. Pair with brown rice to supply methionine, the limiting amino acid in beans, creating a complete protein profile. Store dried beans in an airtight container away from light and heat; older beans take longer to cook as their cotyledon cell walls harden over time.
Calories by Serving Size
Full Nutrition Facts
Per 100g — daily values based on a 2,000 calorie diet
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Frequently Asked Questions
How many calories are in Beans, Dry, Flor de Mayo (0% moisture)?
Beans, Dry, Flor de Mayo (0% moisture) contains 101 calories per 100g. It is a moderate-calorie food that can fit into most healthy diets.
How much protein does Beans, Dry, Flor de Mayo (0% moisture) have?
Beans, Dry, Flor de Mayo (0% moisture) provides 23.3g of protein per 100g, which is 47% of the 50g daily recommended value. It is an excellent source of protein.
How many carbs are in Beans, Dry, Flor de Mayo (0% moisture)?
Beans, Dry, Flor de Mayo (0% moisture) contains 0g of carbohydrates per 100g . It also provides 4g of dietary fiber.
Is Beans, Dry, Flor de Mayo (0% moisture) good for weight loss?
Beans, Dry, Flor de Mayo (0% moisture) has 101 kcal per 100g, which is relatively moderate. It can fit into a weight-loss diet as long as portion sizes are managed. Its high protein content (23.3g/100g) helps with satiety. Its fiber content (4g/100g) also promotes fullness.
How do I track Beans, Dry, Flor de Mayo (0% moisture) calories accurately?
The easiest way to track beans is with CalRay. Simply snap a photo of your meal and the AI will automatically identify the food and calculate calories and macros based on the estimated portion size — no manual lookup required. You can also search by name and adjust gram weight manually.