28 Jan 2020 --- Sales for Brown Oyster Cluster and King Oyster mushrooms have soared by almost 240 percent, because of their meat-like texture, UK retailer Tesco has revealed. They are also two of the key vegetables behind the supermarket’s exclusive, Wicked Kitchen vegan food range. The mushroom boom comes amid massive growth in plant-based ingredients, as more consumers are opting for foods that aren’t animal-derived.