I would definitely make this again! Great recipe. As far as reusing the marinade. The three major bacteria you need to worry about are, E. Coli, Salmonella, and Staphyloccus Aureus (less common). All three will be destroyed by bringing to a boil and simmering for 5 minutes. I changed the marinade prep a bit. I made a cornstarch slurry with the 1 tsp cornstarch with about 1 Tbsp of water. I simmered the marinade without the cornstarch 5 minutes then whisked in the cornstarch + water slurry and heated until thickened. Prolonged heat decreases the thickening of cornstarch so adding it early did not make sense to me.
Claude Wilson, San Ramon, CA