I'm sure that I spend more on beer than food but I only drink it at the weekend or on special occasions. But I do have a lock-down G&T which isn't featured in my guesscalations. The duck curry was actually about £3/pp now I think about it (but the last time I had it was £17 in a restaurant and I think I did a fair facsimile). I could have gone down to the lake and spanged a duck over the head, of course, and it would have been cheaper.
I don't really think about what I buy, I was just testing the theory that it's cheaper not to make stuff. I don't feel especially decadent, it's not like I'm gorging on truffles, lobster, and caviar. Some things are best saved until to the weekend.