Aside from Duman, another one of my favorite Filipino treats (that can be stored in the freezer) is Puto. Puto is a steamed rice cake. From the freezer, I just simply pop it in the microwave for a minute, and then it's all ready. It's great with a little coat of butter or a thin slice of cheese.
Stored in Ziplocs. This can last for a loong time. Like ice, it's a staple item in my freezer. I eat a pair at least every other day.
Straight from the microwave. It's so nice and fluffy, tender, and chewy. Mmm!