Tomato stand-alone or multiple-bay greenhouses is on the increase, providing fruit during those times of the year when field-grown fruit is not readily available. Smaller sized fruit (cherry and grape), or cluster tomatoes (fruit-on-the-vine) are the fruit of choice for the large commercial greenhouse operators while the beefsteak varieties are the choice of owner-operator growers. Hydroponic technique is often used in hostile growing environments, as well as high-density plantings. To facilitate transportation and storage, tomatoes are often picked unripe (green) and ripened in storage with ethylene. Unripe tomatoes are firm. As they ripen they soften until reaching the ripe state where
Fruit wine bottling. Plum liquor, also known as "plum wine", is popular in both Japan and Korea, and is also produced in China. In China, plum wine is called "meijiu" (梅酒). Plum wine is normally made with distilled liquor and soaked with plum. The alcohol level is higher than typical fruit wine, which is fermented with just fruits. In Taiwan, a popular post-World War II innovation based on Japanese-style plum liquor is "wumeijiu" (烏梅酒; smoked plum liquor), which is made by mixing "Prunus mume" liquor (梅酒 "méijǐu"), "Prunus salicina" liquor (李酒 "lǐjǐu"), and oolong tea liquor. Another similar drink is plum jerkum,