Yam+duck meat: nourishing yin and lung, yam+jujube (fresh): invigorating spleen and stomach, yam+lentil: invigorating spleen and kidney, yam+tremella: nourishing yin and moistening lung, yam+lotus seed: invigorating spleen and kidney, yam+corn: absorbing more nutrients, yam+black-bone chicken: nourishing good product, yam+chicken gizzard: treating children's spleen deficiency.