The Talmud, Chullin 109b teaches us that Yalta, her husband, once said to R. Nachman: “Observe, for everything that the Divine Law has forbidden us it has permitted us an equivalent: it has forbidden us blood but it has permitted us liver …; it has forbidden us the fat of cattle but it has permitted us the fat of wild beasts; it has forbidden us pork but it has permitted us the brain of the shibbuta (a kind of fish the brain of which has the same taste as swine's flesh; according to some it is the mullet, according to others the sturgeon); it has forbidden us the girutha (a forbidden bird), but it has permitted us the tongue of fish (which has the taste of girutha);… I wish to eat flesh in milk, where is its equivalent?” Thereupon R. Nachman said to the butchers, “Give her roasted udders.”
I do not believe that there is a moral issue here. The Torah’s prohibition is against eating certain foods, not against their tastes. According to most, there is nothing intrinsically wrong or evil with these forbidden items; they are restricted by divine decree for God’s own reasons. (Those more mystically inclined will disagree with this, maintaining that nonkosher foods contaminate the soul. Nevertheless, permitted foods of exotic flavors would not have the same impact.) In fact, the Midrash explains that a person should not say, “I can’t eat pork, it disgusts me. Rather that person should say, “I’d love to eat it, but what can I do, the Torah prohibits it.”
As we see, there is a long tradition of living within the law yet experiencing the fullness of the world—and maybe that’s the idea. Over the years, we have developed non-dairy milk, non-meat meat, vegetarian liver, fake shrimp, pareve margarine, etc. In order to overcome the marit ayin (suspicion) issue, the Sages require that some sort of distinguishing sign be present when we eat these things. The SHulchan Arukh rules that when consuming pareve almond juice (looks like milk) along with meat, that there be almonds on the table. When pareve margarine or creamer were first used, rabbis insisted that they be served in their original wrappers and containers. These foods are now so widespread that there are no suspicions when seeing someone use them.
Answered by: Rabbi Mark Dratch