See initial public offering. When a company reaches a certain stage in its growth, it may decide to issue stock, or go public, with an initial public offering (IPO). The goal may be to raise capital, to provide liquidity for the existing shareholders, or a number of other reasons.
Sherbet (often pronounced sherbert in American English) is a frozen dessert made from iced sweetened fruit juice or puree. Sherbets usually have more ingredients, such as milk, egg whites, or gelatin, than sorbets, which are generally made from iced fruit puree and other ingredients.
Here is a basic recipe in how to make sherbet. There can be some confusion between sherbet, sherbert and sorbet but as I understand it (and as a child growing up in Australia) sherbet is a light and sugary powder that can be enjoyed by itself and is tingly on the tongue. Great fun!