Salted butter was developed to prevent spoilage, and to mask the taste of rancid butter. A sour-bitter taste is identifiable with rancidity (i.e. soapy, baby-vomit, blue cheese). Rancid butter becomes yellow to brown and the flavor becomes harsh.Click to see full answer. Considering this, why does butter taste bitter?Streptococcus bacteria in the butter produces a malty or sour taste. Things like medications and pesticides can make butter taste like chemicals. If the butter has a harsh, sour-bitter taste (like soap or blue cheese), it is most likely rancid. When butter is rancid, it turns a brownish color.Likewise, why does butter taste different? When butter, or another fat coats our tongue, it reduces our ability to taste other flavours. Because of this, if a sauce is too strong in a flavour, such as spicy or sour, whisking some cold butter into the sauce can cover up the intensity. Regarding this, is butter bitter? A longer version Betty Botter bought some butter but, she said, the butter s bitter; if I put it in my batter, it will make my batter bitter. But, a bit of better butter will make my batter better. So, she bought a bit of butter better than her bitter butter, and she put it in her batter and the batter was not bitter.What is the Betty Botter tongue twister?Betty Botter. Betty Botter had some butter, “But,” she said, “this butter’s bitter. If I bake this bitter butter, it would make my batter bitter.