answer:Disclaimer: I have never made this recipe, nor have I cooked with ****. Based on my experience with making dough, if you need it to be cold, it’s so that the dough stays firm, and usually that’s because you have butter that you want to avoid melting or softening. In this recipe, you are adding warm-ish onions at the same stage as the ****, so I’m going to guess that keeping the dough cold is not a priority. There are no ingredients (like eggs) that would suffer from a clash of temperatures. So, I think it doesn’t matter whether the **** is cold or at room temperature, or somewhere in between.