Yay, the return of Mag the Cook! Though I am a little surprised that Boromir has given his baby brother the more dangerous task. :-D
My summertime favorite! But is it canon? I think we can make it work--snow from the summit of Mt. Mindolluin, lemons from Dol Amroth, honey instead of sugar. (The emperor Nero was supposed to have enjoyed fruit ices made from the snow of the Apeninnes, so there is precedent).
Author's reply
Ah, Faramir is young, but he's deep - no one would suspect him as part of the plot!
I was thinking of snow from the mountains, or ice cut from frozen mountain lakes, and stored in sawdust, as was done (I think) in New England and the midwest during the last century. I did try to think of a less-complicated dessert, but nothing else really had that aura of rare delicacy as lemon ice. Well, mango or coconut, maybe, as I enjoyed last week, but that's bending canon way too far - even for me!