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Buttermilk for Sustainable Protein
3.3g protein per 100g · Complete
Fits in moderation
Lower-impact protein sources — legumes, algae, and small fish — let you hit your target without the land and water cost of large livestock.
The numbers
Per 100g
3.3g
40 kcal
Daily target (70kg)
~98g
protein per day
Per 100g portion
3.3g
Servings/day to hit target
30×
~1200 kcal from this food
Why it works for sustainable protein
For sustainable eating, look for low environmental footprint per gram of protein. Buttermilk isn't a top pick — cultured low-fat milk, tangy.
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