There are some old 18th century pies they cooked in boiling water inside a bag which could be quite spherical. Townsends on youtube has some videos on it.
The first two things that spring to mind are pasties from the UK (which are not usually spherical but can get quite hemispherical), and the "UFO-Döner" from Germany (which are more oblate spheroids). Maybe by combining these ideas, your friend can get closer to their dream?
I’m pretty sure that the state of the art right now is firing the pastries on a ballistic arc in hard vacuum and hitting them mid-trajectory with a laser pulse to cook them through.
Well if you insert metal rods through it you can help with the heat transfer, then you can lattice over the holes. If you pumpkin pie it, you might even be able to have it hold up under its own weight. Plus a bit of stiff whipped cream in the holes would help.
fmbb|3 days ago
NegativeLatency|3 days ago
gdhkgdhkvff|3 days ago
inigyou|3 days ago
ant6n|3 days ago
Could also do it on pi approximation day (July 22), then one doesn't have to be so exact about it.
cmehdy|3 days ago
fsagx|3 days ago
22/7 ~= 3.14
AngryData|3 days ago
DiggyJohnson|3 days ago
MrJohz|3 days ago
Fluorescence|3 days ago
I suspect that deep-fried-battered haggis might exist which could be very spherical.
walthamstow|3 days ago
harimau777|3 days ago
hinkley|3 days ago
addaon|3 days ago
_aavaa_|3 days ago
redundantly|3 days ago