One of the things I did this evening while finalising a Sous Chef[1] order was go through East double-checking whether there was anything shelf-stable she calls for that (i) I don't yet own, and (ii) was actually available from this particular source.
The answer to that particular question was no, but in the process -- part of the point of this exercise being to work out whether "cook everything from that book that I haven't yet" might be an entertaining Project for the year[2] -- I wound up diverting to looking up whether pomelo has the same drug interactions as grapefruit. (There's a salad.)
The answer to that question is "yes, probably, and also so do lime and Seville oranges", at least according to Bailey et al. (2013), entitled (...) Grapefruit–medication interactions: Forbidden fruit or avoidable consequences?
WAIT WHAT, I said, WHAT THE FUCK. WHAT???
... and proceeded to experience the Emotional Rollercoaster of reading on to discover that the one reported adverse event was nephrotoxicity, relating to the use of drugs that prevent rejection of organ transplants, following
Marmalade, 1.5 kg eaten during preceding 1 wk
... and the subsequent clarification that not only did this event take place in the context of consuming one and a half kilograms of marmalade, it was, specifically, grapefruit marmalade.
... for some reason I am no longer feeling alarmed about my weekly consumption of, at most, five teaspoons of marmalade.
New toy from previous Sous Chef order: ridiculous cast-iron spice grinder. I am enjoying it a great deal, and also have discovered that it works much better or at least with fewer blisters if you, er, do not fill it entirely to the brim...
[1] If this looks like your idea of a good time, have a referral link for You Both Get £10 Off!
[2] Broadly yes; there are three or four recipes that are incompatible with Alexes, mostly for reasons of caffeine, and another couple with Integral Mayonnaise about which I am Extremely Dubious. But other than those...