1To prepare dashi, wipe the Kombu with a damp cloth, then place it in a pot with 1000 grams of Water. Bring to a gentle simmer over medium heat, just before boiling, remove the Kombu. Add the Katsuobushi to the simmering water, turn off the heat, and let it steep for 5 minutes. Strain the dashi through a fine-mesh sieve, discarding the Katsuobushi.