I know that the Mormon church requires members to tithe regularly. Otherwise, their membership may be restricted, until they tithe. My question is, do members have to tithe in money? Are they allowed to tithe in food items? Maybe a Mormon has a garden of orange trees in his or her backyard, and decides to tithe 10% of the yield to the church. Would the church put a minimum requirement on the quality of the oranges, or is the mere existence of the orange sufficient? Maybe a Mormon is very good at cooking and prepares a wonderful dish of casserole for the church. Are prepared foods allowed? Can they serve as a replacement for tithing in money?
As in the Bible, tithes in the LDS Church were once commonly paid in-kind, that is in livestock, crops, land, etc.
Nowadays, tithing is usually paid with money because (1) that is what most people earn (2) it is easiest to account for and (3) financial contributions are easiest to process/use. (You can't build a church out of oranges.)
That said, the LDS church does accept donations in kind.
LDS Church Donations-in-Kind Office
Most often, though, these these will be stocks, bonds, or real estate.
If someone wants to make a local donation (e.g. oranges):
As far as quality/quantity, it's the same as in the Bible: give God the best of what you have.
Also, it's worth mentioning that the LDS Church has very little to say about the details of tithing (before or after taxes, personal business, etc), other than it is "10% of increase/income." No further statement or clarification has been made.
Today, it is generally and officially declared that tithing is ten percent of one's income, and has nothing to do with one's current posessions. In particular, this means that as long as your income is an amount of money, your tithing will also be an amount of money. I believe this is universal at least in the US (where you pay tithing by filling out a slip, and the slip allows only cash or check). The doctrine is of course open for interpretation, and it is possible the situation is different in poorer countries.
Historically and I believe biblically, tithing was much more based on property. In 1837 (1) tithing was 2 percent of your net worth, including property, and the Law of consecration was a more extreme, almost communistic law (which didn't work out too well) requiring members to give all their money and property, and have returned to them what they needed (2). The Law of consecration was discontinued but is still considered the highest law; in other words, if the membership of the church was perfect, they would follow the law of consecration.