01 - Preheat oven to 300°F and line a baking sheet with parchment paper.
02 - In a large bowl, combine all seeds, salt, garlic powder, and dried herbs if using. Stir until evenly distributed.
03 - Pour in the water and stir thoroughly. Allow the mixture to rest for 10 minutes until it thickens into a gel-like consistency.
04 - Transfer the mixture onto the prepared baking sheet. Using a spatula or the back of a spoon, spread it very thinly and evenly to about 1/8 inch thick.
05 - Lightly score the surface with a knife or pizza cutter to mark desired cracker shapes before baking.
06 - Bake for 1 hour, rotating the tray halfway through, until the edges are golden and the crackers are crisp. If needed, continue baking for up to 10 additional minutes.
07 - Remove from the oven and let cool completely on the sheet. Break into individual crackers along the scored lines.
08 - Transfer cooled crackers to an airtight container. They will keep well for up to one week at room temperature.