@MaryMamuzich it was just a supermarket own brand
any muffin tray should work - you just get a different size of yorkie depending on the tray you use, and the size of the 'holes' it gives you
a heavier grade metal muffin tray should work just fine too though
all i've really brought is a fancy version of a muffin tray - it's just bigger for Yorkies, which can be as big as your baking equipment can allow
Yorkies, the size of a dinner plate, are my favourite, but I haven't got anything that big (some northern England pubs/restaurants will serve you your dinner, tucked inside a Yorkie :-) )
I don't really want to try my nice victoria sandwich cake tins for this........
this is en english version [of amazon], but it looks identical to what I bought in our local supermarket (although mine were only half that price ;-) )
https://www.amazon.co.uk/Samuel-Groves-Collection-Non-Stick-Yorkshire/dp/B07NRG3FD2/ref=sr_1_3_sspa?dchild=1&keywords=yorkshire+pudding+tray&qid=1632507712&sr=8-3-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExSVI3OVRMNEgxNTlXJmVuY3J5cHRlZElkPUEwODEyNTA0MlVaRlFWT0ZNTDNZNiZlbmNyeXB0ZWRBZElkPUEwNDU3Mzc4MjMzWFNZWExOMEVXUCZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=