For substitution I used oranges for tangerines (as they're not in season). And wow - the marinade was absolutely fantastic. However I was disappointed that the tangyness and the freshness was overpowered almost completely by the snowpeas and the carrots, as happened with the scallops as well. I mopped up the sauce though with a piece of bread (Finnish rieska - recepie #81854 - this is what I call fusion cooking!) and it was delicious. I also found that it's quite easy to prepare ahead - let the carrots marinate in the sauce, and when you're ready put rest of the incredients together.
We loved this recipe. I used shrimp instead of scallops, added garlic and subbed red and yellow bell peppers for the snow peas. Great way to use those seasonal Clementines.
we found the sauce to be very thick and it coated the pasta well. i had to add more orange juice to the mixture and some hot water to thin it out a bit.nice taste with the tangerine zest and juice.