01 - Set oven temperature to 300°F (150°C) and line a baking sheet with parchment paper.
02 - In a large mixing bowl, combine all seeds, sea salt, garlic powder, and dried herbs if using.
03 - Add water to the dry mixture and stir thoroughly. Allow the blend to rest for 10 minutes until it forms a gel-like consistency.
04 - Transfer mixture to the prepared baking sheet. With a spatula or the back of a spoon, spread it out into an even layer about 1/8 inch thick.
05 - Lightly score the surface with a knife or pizza cutter to outline individual cracker portions.
06 - Bake for 1 hour, rotating the tray halfway through. Continue until edges are crisp and crackers are golden. If necessary, bake an additional 10 minutes for more crispness.
07 - Remove tray from oven and allow crackers to cool completely. Break along the scored lines to separate.
08 - Transfer cooled crackers into an airtight container and store for up to one week.