As stated by Seiren , you will find two Granny Grace's in Hugel with chatroom , so two groups of people can join at a time . However , 2 Granny Grace's = 2 diff maps . Here are the ingredients :
The ingredients are the same and the npc location is fixed .
Ingredients from each monster : Cranberry sauce , Cheesecake , Corn Turkey , Spicy soup , Corn Turkey , Potato Mashing , Corn Cranberry Sauce , Special Pumpkin
I'd recommend to focus on 1 dish per run since the time limit is short ( 5 mins) and the ingredients will be erased after you got warped out .
Do collect the Thanksgiving Crests dropped from every monsters to make Thanksgiving Pilgrim Hat and if you're lucky there is a chance of obtaining a Teddy Bear egg when you Boost your hat !
Hope this help ! Happy thanksgiving everyone