How to remove the thin skin on walnut meat

The thin skin on walnut meat can be removed by soaking in hot water, heating in an oven, manual peeling, freezing, or steam softening. Walnut endothelium contains tannic acid, which has a bitter taste but certain nutritional value. Whether to remove the skin or not can be chosen according to personal needs.

1. Hot water soaking

Soak the walnut kernels in hot water at around 80 ° C for 5 minutes until they absorb water and expand, allowing the inner lining and flesh to naturally separate. Gently lift along the gap with a toothpick or knife to completely peel off. This method is suitable for cooking needs that require maintaining the intact shape of walnuts, such as making pastry decorations. Be aware that high water temperature may cause denaturation and whitening of surface proteins in walnut kernels.

2. Oven Heating

Preheat the oven to 150 ℃ and bake walnut kernels for 3 minutes. The high temperature causes the moisture in the inner skin to evaporate and shrink. Remove and cool slightly, then rub with both hands to peel off. This method can simultaneously stimulate walnut aroma and is suitable for ready to eat or making nut platters. Attention should be paid to observing color changes, as baking for too long can cause oil to seep out and affect the taste.

3. Hand peel

half open the walnut and slowly scrape off the inner lining along the concave part of the flesh with a fingernail. Suitable for handling small amounts of walnuts or partially cracked inner skin, although time-consuming, it can maximize the preservation of intact flesh. It is recommended to operate in a well lit environment and use a magnifying glass to observe subtle connections.

4. Freezing treatment

Seal the walnut kernels and freeze them for 2 hours. Low temperature makes the inner skin brittle and crack. After taking it out, tapping the container or rubbing the bagged walnuts can cause the inner lining to peel off easily due to temperature differences. This method is suitable for large-scale processing, and the peeled walnuts should be used as soon as possible to prevent moisture regain.

5. Steam softening

After steaming in a steamer, put in walnut kernels and steam them over water for 1 minute. Steam penetration softens the endothelial fibers. Wrap with kitchen paper and gently wipe to remove. This method can preserve the original flavor of walnuts to the greatest extent possible and is suitable for making beverage ingredients such as walnut sauce. Although walnut endothelium contains antioxidant components, tannic acid can affect mineral absorption. Peeled walnut kernels are more suitable for children and gastrointestinal sensitive individuals to consume. It is recommended to choose the peeling method according to the consumption scenario, dry heat method for baking, and wet treatment method for cold dishes. Unpeeled walnuts are recommended to be sealed and stored away from light to prevent oil spoilage. The recommended daily intake is 20-30 grams, which can be balanced with ingredients such as black sesame and goji berries to enhance nutrition.