In short, yes. The main focus of the keto diet is to keep carbohydrates below 25 grams a day. With keto, the body shifts from carbs to fat as a primary energy source. Ricotta Cheese is made from the curds of whole milk, which makes it keto. Serving Size  carbohydrates - ¼ cup (4.42grams) Glycemic Index - "27" - the low end of the scale. Having a very low effect on blood sugar levels.