Calories in 3 teaspoons

From a table row to one teaspoon

1. Read the per-100 g row for ghee out of the Indian Food Composition Tables 2017 — analysed on Indian samples, so Indian wheat and Indian milk are not swapped for American ones. It gives 900 kcal and 0.0 g protein per 100 g.
2. Weigh what is actually served. This site enters 1 teaspoon at 5 g (pure milk fat — one teaspoon on a roti adds 45 kcal). That weight is the number other calorie sites decline to state, and it is where their answers stop being answers.
3. Multiply, linearly, and print the working: 900 × 5 ÷ 100 = 45 kcal per teaspoon. Nothing is rounded up, adjusted or smoothed — two teaspoons are exactly twice one.
4. Reconcile the energy against its own macronutrients with Atwater factors on every build. A row more than 15% away from 4P + 4C + 9F (20% above 6 g of fibre) stops the build rather than shipping.

per teaspoon   =  per 100 g  ×  serving grams ÷ 100
Ghee               =    900 kcal ×    5 g ÷ 100  =  45 kcal
energy check       =  4P + 4C + 9F  ±15%  (±20% if fibre ≥ 6 g)

The full method, and where it is weakest →