DiscussMormonism.com

So, my jewish friend is getting married in a couple of weeks. They're serving all kosher food (which according to him is very expensive; then again, he's a cheapskate). He mentioned that they would only be serving white wine because his fiancé doesn't want the possibility of red wine being spilled on her dress. I joked about bringing my own red wine and he said that I couldn't because everything is kosher, including the plates and glasses. To pour non-kosher wine into a kosher glass would render it non-kosher as well. He told me a couple of other things too about kosher rules that I found very interesting and incredibly complicated. Anyway, that's been kicking around in the back of my mind, so I looked up some information online. I came across this page. The part of interest is the section "Grape products":

The restrictions on grape products derive from the laws against using products of idolatry. Wine was commonly used in the rituals of all ancient religions, and wine was routinely sanctified for pagan purposes while it was being processed. For this reason, use of wines and other grape products made by non-Jews was prohibited. (Whole grapes are not a problem, nor are whole grapes in fruit cocktail).

For the most part, this rule only affects wine and grape juice. This becomes a concern with many fruit drinks or fruit-flavored drinks, which are often sweetened with grape juice. You may also notice that some baking powders are not kosher, because baking powder is sometimes made with cream of tartar, a by-product of wine making. All beer used to be kosher, but this is no longer the case because fruity beers made with grape products have become more common.

My mind immediately made the connection between this and "wine of your own make" as mentioned in Section 89 of D&C. I have a hunch that it's not a coincidence, but am not sure. I've also heard the Joseph Smith was concerned about or at least said he was concerned about "gentile" wine being poisoned, but don't know the source. Mainly, I'd like to hear if anyone has some good input or sources they can share about this.

Isn't Paul Osborne somewhat of an expert on alcoholic consumption?

All i can say on this subject is my own personal experience with wine making. Its fun, and oh so good! In fact, if i had the time and money to invest in another batch, i would LOVE to do it.