The phrase "to reserve the marinade" means to set aside or save the liquid mixture used to marinate meat or vegetables. It is not discarded and is kept separate for later use, such as for basting or as a sauce.
Sentences with «to reserve the marinade»
Pour reserved marinade over tempeh and cook another minute. (connoisseurusveg.com)
Heat reserved marinade in a pan, bring to boil, simmer 1 minute. (housegoeshome.com)
Pour reserved marinade over hot snapper and let sit at least 10 minutes (the longer it sits, the more intensely flavored it will be). (bonappetit.com)