I don't have a cool name for this

Energy densities of various food components are given below:

$\begin{array} {lcc} \text{Food component} & \text{kJ/g} & \text{kcal/g} \\ \text{Fat/Lipids} & 37 & 9 \\ \text{Ethanol (drinking alcohol)} & 29 & 7 \\ \text{Proteins} & 17& 4 \\ \text{Carbohydrates} & 17 & 4 \\ \text{Organic acids} & 13 & 3 \\ \text{Polyols (sugar alcohols, sweeteners)} & 10 & 2.4 \\ \text{Fiber} & 8 & 2 \end{array}$

Source: Wikipedia -- Food Energy