Match the job: choose a blue-cheese option for the closest “funk,” or a salty tang option (feta/goat) if you just need sharp flavor.
Use the ratio above to swap roquefort in the same quantity (for stronger brands, start with slightly less and top up).
If substituting a wetter cheese (like feta), drain well first to prevent watery sauces.
Adjust at the end: taste your dish and fine-tune with salt (for feta/goat) or a touch of acid (lemon/vinegar) if it tastes flat.
For dressings/sauces, let crumbled cheese come to room temperature so it disperses more evenly.