In a small bowl, combine the lukewarm water, dry yeast, and sugar. Stir gently and let it sit for about 5-10 minutes until the mixture becomes frothy.

In a large mixing bowl, combine the flour, baking powder, and salt.

Add the frothy yeast mixture and vegetable oil to the dry ingredients.

Mix until the dough starts to come together.

Knead the dough on a floured surface for about 5 minutes until smooth and elastic.

Gently knead the poppy seeds and grated cheese into the dough until evenly distributed.

Preheat your oven to 180°C (350°F).

Roll out the dough on a lightly floured surface to about 1/8-inch thickness.

Cut the dough into desired shapes using a cookie cutter or a knife.

Place the cut-out crackers onto a baking sheet lined with parchment paper.

In a small bowl, mix equal parts water and oil. Brush the tops of the crackers with this mixture.

Sprinkle a little extra salt on top of the crackers if desired.

Bake in the preheated oven for 20-25 minutes, or until the crackers are golden brown and crisp.

Allow the crackers to cool completely on a wire rack before serving. Store in an airtight container to keep them fresh.