Bottle gourd

Use the same weight; peel, deseed and cut into similar pieces. It is firmer and slightly more watery, so add a little less water and cook 5 minutes longer.

Use the same weight; no need to peel. It cooks faster and releases water, so reduce the recipe liquid by about 10% and add it later.

Use the same weight; peel and remove the stone. It stays firmer, so cut it smaller and cook a few minutes longer.