Yes, multigrain dough can be stored overnight without fermentation by refrigerating it immediately after mixing to slow down yeast activity. This method is called cold fermentation or retarding the dough.
Storing multigrain dough without fermentation at room temperature overnight is not recommended because the yeast will continue to ferment, potentially leading to over-proofing. Over-proofed dough can become too acidic, collapse, and result in a flat, dense final product. To prevent this, you can refrigerate the dough immediately after mixing. The cold temperature significantly slows down the yeast activity, allowing the dough to rest and develop flavor without excessive rising.
Here's a step-by-step guide:
When refrigerating dough, use a container that is large enough to accommodate the dough as it continues to rise, even slowly. This prevents the dough from overflowing and making a mess in your refrigerator.