In the words of Julia Childs, “With enough butter, anything is good.”

Undoubtedly, a little butter can elevate any meal. Whether spread on paranthas, simple toast, or added to soups and gravies, it brings a rich flavour and texture that’s hard to match. Used as both a spread and a cooking fat for centuries, it remains an important edible fat in regions like North America and Northern Europe, where cattle are the primary dairy animals.

Butter is a high-energy food, providing approximately 715 calories per 100 grams. A single tablespoon (about 14 grams) contains roughly 100 calories—similar to the energy in a medium banana. It is composed of at least 80% milk fat and contains relatively little protein. Butter also provides essential nutrients, including vitamins A, D, E, B12, and K2, along with calcium and phosphorus. However, with cases of food adulteration on the rise, it’s important to be mindful of the quality and authenticity of the butter we consume.

Caveat Emptor

Common adulterants found in butter include mutton fat, beef fat, potato pulp starch, vegetable oils, hydrogenated fat, jaggery, soft paraffin, and margarine. Cases of adulterated butter have been on the rise in India. In one particular instance, the Mumbai police seized 1000 kg of spurious butter, which was packed in Amul packaging. In another horrifying incident, a gang from Gujarat was arrested for adulterating 25 kg of butter with 15 kg of vanaspati ghee.

Ways to detect adulteration in butter

Palm Test

Place a small amount of butter on your palm. If it begins to melt naturally from your body heat, it is likely to be pure.

Heat Test

Heat a teaspoon of butter in a clean vessel. Pure butter melts quickly and gradually turns a dark brownish colour. If it turns light yellow instead, it may be adulterated.

Double-Boiler Test

Melt equal amounts of butter and coconut oil in a glass jar using the double-boiler method. Refrigerate the mixture. If the two fats solidify into separate layers, it may indicate adulteration.

Hydrochloric Acid (HCl) Test

Heat a tablespoon of butter in a glass test tube. Add an equal quantity of concentrated hydrochloric acid (HCl) and a pinch of sugar, then shake well. A pink or red colour may indicate the presence of hydrogenated oil or other adulterants.

Note: This test involves concentrated hydrochloric acid, a corrosive chemical, and should only be carried out in a properly equipped laboratory by trained personnel.

Iodine Test for Starch

Place a small amount of butter in a bowl of water and add a few drops of iodine solution. If the mixture turns blue, it may indicate the presence of added starch.

Although starch is a common component of foods such as rice, bread, and potatoes, it is not a normal ingredient in butter. Its presence suggests adulteration. Consuming excessive amounts of refined starch over time may contribute to blood sugar spikes, weight gain, and an increased risk of conditions such as type 2 diabetes and heart disease.

Note: Household tests provide only preliminary indications and cannot confirm adulteration. Laboratory analysis is required for definitive results.

The Bottom Line:

Butter is low in lactose and is generally regarded as healthy when consumed in moderation. However, when consumed excessively, it may result in weight gain. All in all, while butter may not be the ultimate health food, it has become an essential ingredient for our cooking and baking purposes. Therefore, dear readers, while consuming it in moderation, it is advised that the aforementioned tests be conducted to avoid consuming adulterated butter.