Ultra-processed diets add +508 kcal/day (Hall et al., Cell Metab 2019). Per 100 g: 181 kcal, 14.1 g fat, 7 g protein. Fat-free sour cream trades fat for thickeners — check the macros.
How should I track Sour cream, reduced fat?
Sour cream, reduced fat is a good source of calcium. The best way to track Sour cream, reduced fat is by weight, not volume. A 200 g serving of yogurt or cheese varies in density between brands and fat levels, so the same portion can differ by 20–40 calories. Research shows people underestimate calorie-dense dairy portions by up to 50% when eyeballing (Almiron-Roig et al., Appetite 2013). A kitchen scale keeps things honest. Also check whether the label lists values for the product as sold or as prepared — some powdered or concentrated dairy products show very different numbers once mixed.

