Tuna Steaks with Sweet/Sour Onion Relish

The relish/sauce for the tuna was really tasty, the sweet of the cooked onions, bell peppers, and balsamic vinegar came together very nicely. But ...

The instructions say to cook the relish topped by tuna steaks at pressure for 2-1/2 minutes for a slight pink center or 3 minutes for full cooked. Our steaks were fully cooked at 2-1/2 minutes, which is a shame, since we both like our tuna, not even pink, but red in the center.

I don't think I'll subject any more tuna steaks to the pressure cooker treatment, but I'll definitely consider making this sauce, maybe just in a skillet, to go with tuna steaks from the grill.