This is a mixture of three preparations: Maria Thun, goat's milk whey, and clay, all diluted in rainwater, then dynamized. It must be used within 48 hours. The bacteria from the whey act as a natural disinfectant and protect the vines against some degenerative wood diseases such as esca. They provide nutrients and reinforce the vitality of the microorganisms in the soil. It’s a little like a vitamin cure to boost the immune system.