Dulces De Calabasas (Mexican Pumpkin Candy)

"This is the stuff you get by the cash register at Mexican restaurants or in little Mexican grocery stores. It's been one of my favorites since I was, oh, 6 or 7 and got some at Olviera Street. I add the cinnamon and cloves because I like it spicy, but traditionally it's just pumpkin and sugar. Really labor-intensive, but so worth it! Do not use carving pumpkins, use sugar-pie or other cooking pumpkins (which the computer does not recognize.) Cook time is for unattended resting time...."