Tempeh, much like tofu, absorbs flavor really well. I allowed the tempeh to marinate in a homemade teriyaki for 36 hours before tossing on the grill. Tempeh holds up quite well on the grill even when soaked with a marinade.
I paired the tempeh with grilled portobello and pineapple. I simply glazed them with the leftover marinade from the tempeh. The beauty of not using meat! The marinade can be reserved and used for other purposes.
Also, the burrito is a great vessel for the grill. It crisps up nicely. Erin, the wrapping queen put these together and loaded them peanut slaw, more teriyaki and peanut sauce. Enjoy!