Combine the warm water (110°F / 43°C) and 1 tablespoon of barley malt syrup in a small bowl, then sprinkle the yeast over the top and stir gently. Let it sit for 5-10 minutes until foamy and bubbly; if using instant yeast, skip this step and add all ingredients directly to the mixing bowl.
Add the bread flour, salt, yeast mixture, and vegetable oil to the stand mixer bowl fitted with the dough hook, then mix on low for 1-2 minutes until a shaggy dough forms. Increase to medium speed and knead for 8-10 minutes until the dough is smooth, firm, and only slightly tacky — it should pass the windowpane test.
Shape the dough into a tight ball, place it in a lightly oiled bowl, and cover tightly with plastic wrap or a damp towel. Let it rise at room temperature for 60-90 minutes, or until roughly doubled in size; alternatively, refrigerate overnight for up to 16 hours for deeper flavor.
Punch down the dough and divide it into 8 equal pieces (about 110-115g each), then roll each into a smooth ball and let them rest 5 minutes. Poke your thumb through the center of each ball, stretch the hole to about 2 inches in diameter, and place the shaped bagels on a parchment-lined baking sheet.
Cover the shaped bagels loosely and proof at room temperature for 20-30 minutes until slightly puffier. Test readiness by dropping one bagel into cold water — if it floats within 10 seconds, the bagels are ready to boil.
Preheat the oven to 450°F (230°C) and bring 3 quarts of water to a rolling boil in a large pot. Stir in the 2 tablespoons of barley malt syrup and 1 teaspoon of baking soda.
Working in batches of 2-4, lower the bagels smooth-side-down into the boiling water and boil for 1 minute per side (or 90 seconds for a chewier crust). Lift them out with a slotted spoon and place smooth-side-up on a parchment-lined baking sheet.
While the bagels are still wet from the boiling bath, immediately sprinkle on your desired toppings — everything seasoning, sesame seeds, poppy seeds, coarse salt, or dried onion. Work quickly, as the surface dries fast and toppings won't adhere well once dry.
Bake at 450°F (230°C) for 20-25 minutes, rotating the pan halfway through, until the bagels are deep golden brown all over. Transfer to a wire rack and cool for at least 15-20 minutes before slicing.