Literally “dry” — the adjective is from the Spanish word seco, meaning “dry.”
It’s been likened to blackboard chalk with a sweet taste, except that chalk is made of finer powder.
Puto seko are traditionally plain white and are shaped like thick round cookies. Flower-shaped puto seko have also been popular. You can sometimes find square-shaped ones.
Also in recent years, they have been available in other flavors and colors, such as ube (purple yam) and buko pandan (green screwpine leaves + coconut).
More photos to be added here soon. Please check back. 🙂