Preheat oven to 170°F and have a clean, mat ready to fill.
Place ¼ cup of boiling water in a small bowl. Add tylose powder and stir with a fork to combine. Let the mixture sit until translucent, about 5- 7 minutes.
Add tapioca starch. Mix until well combined.
Add food coloring. Mix until well combined. If necessary, add more color.
Add hot water 1 teaspoon at a time, combining well after each addition. You are aiming for a thick, but spreadable paste. Once the consistency is close, add any colored food gel if you want.
Use a small angled spatula to press and spread small dollops of the paste into every nook and granny of the lace mat. Once filled, scrape off excess with a bench scraper.
Transfer to a baking sheet. Bake until the edges are dry, roughly 7- 10 minutes. If the center is tacky, air dry until it is no longer sticky.
To remove the mold, flip the mat over onto a silicone mat or parchment paper. Gently peel the edge of the lace out. Pull the mat away from the mold. Use a toothpick on any tricky areas.
Store unused in parchment placed in an airtight container.
