I made double of this recipe ages ago Cathy, without the porcini mushrooms, and froze it in 1/2 cup quantities. Have not long ago used up the last packet. I used swiss brown mushrooms, not button mushrooms and used CORNflour mixed in with the cream before adding it to the TMX to prevent clumping. It turned out really well with a saucy consistency. I imagine the porcini mushrooms would have intensified the flavour and IMO, it didn't need anymore flavour than mine. You could add a bit more water if it was too gluggy.