Does Cooking on Wood Affect Nutritional Value of Food?

Cooking Methods and Vitamin Loss

When cooking on a wood-fired stove, it’s essential to use gentle heat and cooking times to minimize vitamin loss. Steaming or braising are effective methods, as they use lower temperatures and moist heat, which help to retain nutrients. For example, steaming vegetables can retain up to 90% of vitamin C and B vitamins, compared to boiling, which can result in a loss of up to 50%. If you must boil, use a short cooking time, and then quickly submerge the vegetables in an ice bath to stop the cooking process and preserve nutrients.

Wood Smoke and Nutrient Retention

Wood smoke can contain polycyclic aromatic hydrocarbons (PAHs), which are known to bind to nutrients and make them less available for absorption. However, if your wood is properly seasoned and burned efficiently, the smoke will be minimal. Using a well-designed wood-fired stove with a good chimney can also reduce the amount of smoke and PAHs in the cooking environment. In some studies, the use of wood smoke was found to reduce the bioavailability of certain nutrients, but this was mainly in cases of prolonged exposure to high levels of smoke.

Seasonal and Type-Specific Considerations

The nutritional impact of cooking on wood can also depend on the type of wood used. Hardwoods like oak and maple tend to produce less smoke and PAHs than softwoods like pine. Additionally, using wood that has been properly seasoned can reduce the amount of creosote and other pollutants produced during burning. In areas with limited access to other cooking fuels, cooking on wood can be a viable option as long as proper cooking techniques and wood selection are employed.