What I saw on the web on 2022.5.15

1. Homemade Pierogi Casserole
   by Tara Noland
   https://www.littlepotatoes.com/recipes/homemade-pierogi-casserole/
   this looks very tasty!
   via FB
   
   
2. Toccata in D minor (Bach) played on Fire Organ at Transworld Halloween Show
   by Tom BetGeorge
   https://www.youtube.com/watch?v=-reR7GEk6To
   i quibble with some of his choices of tempi, but can't complain about a fire-breathing pipe organ!
   via reddit
   
   
3. Introduction to number theory lecture 53. Three calculators for number theorists
   by Richard E. "Monstrous Moonshine" Borcherds
   https://www.youtube.com/watch?v=P1I3_x0tk2A
   some impressive calculators here!
   via reddit
   
   
4. Free42 : An HP-42S Calculator Simulator
   by Thomas Okken
   https://thomasokken.com/free42/
   in case you lost your HP-42S
   via Borcherds in previous link