as some of you may know, i moonlight as a chef... an esports chef
yoshi's cookie is one of my favorite games, but one of the biggest barriers to entry for competitive play (aside from the fact that Nintendo refuses to rerelease it) is the inability to practice vs mode solo. if you want to bake good, you have to practice, and you can do that a lot easier if you disable the (usually) 20-second timer
in the NES version, there are two bytes in the RAM that handle the timers for each player (addresses 0540 and 0541 respectively) - if you lock the values, the timers can't tick! you can do this in most emulators, but here's how it looks in FCEUX's cheat menu:
if you want to practice with the timer on, you can also just disable P2's timer, so the idle player doesn't time out after 20 seconds!
don't ask me any other questions about how the NES works, i only ever learned enough about it to git gud at yoshi's cookie