Thanks for your tips , I have never seen the Japanese curry roux in a bottle like you see yellow Thai curry etc ,
But I guess thats better since you are not paying for the bottle and the water !

And its really something to have a nice quick lunch and I will try just shreding it with some rice and cooked veggies next time ,

Where did you get the Roux "brick" , we have a lot of Japanese markets around here , but I would not know what to look for