2. Method/step: Prepare all ingredients.

3. Soak soybeans and kelp with clear water respectively. The soaking time of soybeans in summer is about 5-6 hours, and that of kelp is about 2-3 hours. It is recommended to soak soybeans in advance in winter.

4. The soaked kelp is smooth and wrinkle-free.

5. The soaked soybeans are bigger and the size is similar to that of fresh ones.

6, kelp cleaning method: rubbing by hand, like washing clothes by hand, can wash away the dust and impurities on kelp.

7. Method of making sea knots: cut kelp into strips (thicker kelp cut10 ~ 15 cm long and 2 cm wide).

8. Knot the kelp strips by hand.

9. Straighten both sides evenly, and tighten the knot to form a sea knot.

10, tie the remaining kelp into knots, or slice it directly.

1 1, blanch the ribs and pick them up.

12. All the processed ingredients are poured into the pressure cooker liner and filled with clear water.

13, add a little salt, close the cover of the electric pressure cooker and plug it in for 30 minutes.