In a mixing bowl, combine the flour, sugar, salt, and instant yeast.

Gradually add the warm water to the dry mixture and mix until a dough forms.

Knead the dough on a lightly floured surface for about 10 minutes until smooth and elastic.

Place the dough in a lightly greased bowl, cover with a towel, and let rise in a warm place for 1 hour or until doubled in size.

Punch down the dough and divide into 8 equal pieces, shape each into a ball, and poke a hole in the center to form a bagel.

Let the shaped bagels rest on a baking sheet lined with parchment paper for 20 minutes for a second rise.

Preheat the oven to 425°F (220°C).

Bring a large pot of water to a boil and add the baking soda; boil each bagel for 1 minute per side.

Transfer the boiled bagels to the prepared baking sheet, add desired toppings, and bake for 20 minutes or until golden brown.

Remove from the oven and let cool slightly before serving.