Quotethats moonshine

Moonshine is just illicitly, or home produced, distilled spirit, it can come from grain, potato, fruit, vegetables or supposedlyeven wood, although this is likely to make you go blind even faster than apple.

Quote from: sexytw

QuoteGin is a product obtained by original distillation from mash, or by redistillation of distilled spirits, or by mixing neutral spirits, with or over juniper berries and other aromatics, or with or over extracts derived from infusions, percolations, or maceration of such materials, and includes mixtures of gin and neutral spirits. It shall derive its main characteristic flavor from juniper berries and be bottled at not less than 80 deg. proof.

Source

So unless i fancy a bit of distilling from mash(?) or pure alcohol   ill probably stick to a retail gin

When starting a batch of grain spirit you crush the malt (some also use raw grain) and add water. This is your mash. by heating it carefully you turn the carbohydrates in the grain into sugar. The fluid that comes off is called wort, with addition of yeast it ferments to create wash. The alcohol that is distilled off.

Fruit just needs to be crushed to achieve a fermentable product, although in some instances they dont need to add yeast and in others they leave dont remove the pulp for some time. The most used vegetable is corn, although I dont know the process for this and have no idea of that for wood.