Ricotta

Ricotta is a whey cheese that is generally classified as grade 0 (well tolerated) according to the SIGHI list, because it is a fresh product that does not undergo a ripening process and therefore does not accumulate histamine. Although safe for most people with histamine intolerance, histamine content can increase secondary to improper storage or if other fermented ingredients are added to it. In sensitive individuals, problems after consumption may be caused by other factors, such as lactose intolerance or sensitivity to milk protein (casein), rather than histamine itself.