Add the water & dried active yeast to a jug, whisk to combine then leave for 5-10 minutes, to go frothy.The water needs to be at @38°c/100°f. You'll need a digital food probe to check this! In the meantime, add the flour, sea salt & malt extract to the bowl of a stand mixer.
Once the yeast is activated, give it another whisk then pour into the flour. Mix on a medium-low speed until you get a smooth dough that passes the windowpane test. This will take 10-15 minutes.
Once the dough is ready, cover the bowl with a damp tea towel then leave to rest for 10 minutes.
Transfer the dough to an un floured work surface then divide into 6 equal pieces, each weighing around 130 grams. Shape into balls then cover with a damp tea towel & leave to bench rest for 5 minutes.
In the meantime, cut out 6 squares of baking parchment, grease with oil then place onto a baking tray.
Next, take a ball of dough & use your thumb & index finger to pinch/poke a hole in the middle. Gently widen the hole so that it's around an inch wide then place the bagel onto a square of baking parchment. Repeat with the remaining dough then loosely cover the tray with lightly oiled clingfilm.
Let the bagels sit at room temperature for 30 minutes then chill in the fridge for 18-24 hours.