Do Air Fryers and Pressure Cookers Change Calories?

Cooking food in an air fryer can significantly reduce calories compared with deep-frying because the food is not submerged in oil and is generally cooked with less than one 15 ml measure of oil. The circulating hot air can create a crisp surface even without much oil. A pressure cooker works differently: high pressure shortens cooking time but does not add oil or calories to the food. As long as the same ingredients and amounts are used, food cooked in a pressure cooker has the same calories as food cooked in a regular pot.

How does using less oil in an air fryer reduce calories?

Deep-fried potatoes absorb a significant amount of oil through the pores on their surface, and the oil alone can add hundreds of calories. In an air fryer, the food cooks in a stream of hot air; brushing a thin layer of oil over the surface is generally enough, and the amount absorbed is much lower than with deep-frying. This difference is particularly noticeable with foods such as french fries and chicken wings, which are normally cooked in plenty of oil.

Does pressure cooking shorten cooking time but leave calories unchanged?

A pressure cooker raises the boiling point of water through high pressure, which significantly shortens cooking time. However, this process does not add oil or sugar to the ingredients. For example, 1 kilo of chickpeas cooked in a pressure cooker for 20 minutes has the same number of calories as the same amount cooked in a regular pot for 1.5 hours, because the amount of chickpeas and their nutritional content have not changed.

What happens if you use too much oil in an air fryer?

The calorie advantage of an air fryer depends on using less oil. If food is coated generously with oil or pre-oiled products are cooked in it, the calorie count can approach that of deep-fried food. The appliance itself does not reduce calories; it makes it possible to cook with less oil.

How does cooking frozen, ready-to-cook foods in an air fryer affect calories?

Frozen french fries or breaded chicken may already have been fried in oil once before packaging. In that case, even if no additional oil is used in the air fryer, the oil already in the product keeps its calorie count higher than that of a fresh, lightly oiled version made at home. An air fryer prevents only the addition of more oil; it does not remove the oil added during manufacturing. This difference can be seen on frozen-product labels that say “pre-fried.” A homemade version made from the same product in its raw, unfried form generally has fewer calories.

Is there a difference between air-frying and pressure-cooking vegetables?

Vegetables fried in an air fryer, such as zucchini, eggplant, and broccoli, are generally cooked with a thin layer of oil brushed on with a brush and contain far fewer calories than deep-fried vegetables. As the vegetables' own moisture evaporates, their surfaces brown lightly. The same vegetables cooked in a pressure cooker need no added oil because they cook in water or their own steam, so they may have even fewer calories than air-fried vegetables. The texture is quite different: air-fried vegetables brown and crisp slightly at the edges, while pressure-cooked vegetables become completely soft and steamed. The choice of appliance depends more on the desired texture than on calories.

The same distinction applies to cooking meat and legumes: a pressure cooker speeds up dishes that take a long time to cook without adding oil, while an air fryer uses little oil to produce a crisp exterior. When used properly, the 2 appliances can significantly reduce calories compared with deep-frying.

Brief summary

An air fryer significantly reduces calories by using less oil, while a pressure cooker shortens cooking time without changing calories as long as the ingredient amounts stay the same. For both appliances, the main factors are the amount of oil and ingredients used, not the appliance itself.