However I'm back in the saddle When I got home Sunday I cooked a Paleo Pork Loin Dinner with onions, carrots, and sweet potatoes. I used arrowroot flour as a thickener for the Paleo gravy. Remember if you use arrowroot as a thickener it doesn't like too much heat so just bring it to a simmer (not a boil) as you stir. It thickens up clear and real nice and is neutral on flavor.