Sift 4 ¼ cup all-purpose flour into a bowl and mix with 1 ½ teaspoon instant yeast. Add 1 ½ cup water (warm—see ingredient instructions), 2 ½ Tablespoon canola oil, and 1 ½ teaspoon salt, then knead in a mixer with a dough hook. Start on low speed, then increase to medium-high and knead for at least 8 minutes. The dough might be slightly sticky—that is fine!
Transfer to a clean bowl using a dough scraper and cover the bowl with plastic wrap.
Let the dough rise until doubled, about 1.5 hours. After 45 minutes, give it one or two kneads with a wooden spoon to deflate—it helps it rise better!
Turn the dough onto a floured surface, using a dough scraper to prevent sticking. If too sticky, lightly flour the top of the dough and fold it to firm it up.
Divide into equal 3-ounce (85 g) pieces, best using a kitchen scale. Roll into balls and let them rest, covered, for 10 minutes.
Using a rolling pin, flatten a dough ball into a triangle, extending one tip slightly. Roll toward the longer tip, applying light pressure and gently pulling the sides outward. The roll should be 7–8 inches (17–20 cm) long—bend slightly if desired.
Place on a parchment-lined baking sheet seam side down, spacing 1.5 inches (4 cm) apart. A 13×18-inch (32×45 cm) sheet fits five rolls.
Brush rolls with milk or light cream for a golden crust. Sprinkle with a mixture of coarse salt and caraway seeds, poppy seeds, or leave plain.
Let the rolls rise, covered, for 30 minutes. I like to proof the rohlíky in the oven with a pot of hot water at the bottom.
Preheat the oven to
450 °F without a fan. Place a small pot of hot water in one corner of the oven to create steam. Bake one sheet at a time for 13 minutes. Transfer the rohlíky to a rack to cool.