If in doubt, err on the side of too little water, as you can always add more. To make the dough, while the filling cools, in a small saucepan, bring the water to a boil over high heat
There is an assortment of udon/nabe, bento and donburi. I guess I can come back whenever I want Japanese food and the fact that they accept Favepay (where I get cashback from each visit) makes it even more attractive