Oh my word, I may actually have a few packets still lying around. I think it was an herbal tea, if memory serves. Seems to me it was apple cinnamon, or lemon (pack was beige or pinkish beige). I remeber those IMP's, they had some good stuff in them, like mint Oreos, Mirage Bars, Chicklets etc. The standard fills like cofee/tea and juice were also not bad. Heheh, mentioning those particular IMPs, you stirred some memories! I recall two variations of issued IMP's, Freddy Chef was one maker, the other I cannot recall, but I think both came from Quebec. Do you know which maker, meal no. (they were numbered) or general name of the IMP was? I ask because I still have dozens of old IMP bags filled with juice powders, coffee whiteners, teas, honey and peanut butter tubes etc. I can look for the tea you speak of if I know where to start.
While on the subject, mind if I ask what was your favorite IMP? I liked the "Turkey Shnitzel w/ Gravy", Hungarian Goulash, and the Ham Omelette (don't recall the meal numbers ). Those dessert 'cakes' they gave us, however, were execrable. They tasted like an innertube boiled in urine.
Anyway, see if you can remeber what IMP the tea you were fond of was offered in, and I will have a look at some old leftovers to see what I can dig up.