Add the instant yeast to the tepid water and stir to combine. Let stand for five minutes.
4 ½ teaspoon instant yeast, 2 cup tepid water
Add the flour, sugar, salt, and oil to the bowl of a stand mixer fitted with the dough hook.
7 cup very strong high-protein bread flour, ¼ cup caster sugar, 2 ¼ teaspoon fine salt, 3 tablespoon + 1 teaspoon neutral oil
Pour in the yeast mixture and lime juice, scraping the container to make sure all of the yeast is added.
2 tablespoon fresh lime juice
Mix on medium speed until the ingredients come together into a dough.
Continue kneading on medium speed for about ten minutes, or until the dough is smooth and elastic.
Remove the dough hook. Cover the bowl with plastic wrap or a clean kitchen towel and place it in a warm spot. Let the dough proof for about two hours, or until doubled in size.
Turn the dough out onto a lightly floured work surface.
Using a dough scraper, divide the dough into eight equal portions, about six and a half ounces (185 gram) each. Shape each portion into a smooth ball.
Line two baguette trays with parchment paper and lightly coat them with nonstick cooking spray or oil. Alternatively, use parchment-lined baking sheets, leaving plenty of space between each baguette.
Flatten each dough ball into an approximately six-inch (15-centimeter) oval.
Fold one long side into the center. Fold the opposite side into the center, then pinch the seam together to create a baguette shape.
Transfer the shaped dough to the prepared trays and repeat with the remaining dough.
Lightly spray the tops with nonstick cooking spray to prevent sticking. Cover loosely with plastic wrap and place in a warm spot.
Let proof for about one hour, or until doubled in size.
Toward the end of the proofing time, preheat the oven to 440°F (230°C). Place a cast-iron pan on the bottom rack of the oven while it preheats.
Bring about two cups (480 milliliters) of water to a boil for creating steam in the oven.
Remove the plastic wrap from the baguettes. Using a bread lame or sharp knife, make three diagonal scores across the top of each baguette.
Generously mist the baguettes with water using a spray bottle. Alternatively, lightly flick water over the dough with a pastry brush.
Carefully pour the boiling water into the preheated cast-iron pan to create a steam-rich environment.
Place the baguettes on the top oven rack and bake for eight minutes.
Rotate the trays if necessary to ensure even browning.
Carefully remove the pan of water. Continue baking the baguettes for another five minutes, or until golden and crisp.
Transfer the baguettes to a wire rack and let cool completely.