The phrase "to lick the spoon" means to enjoy and savor something, usually a tasty food or treat, by licking the utensil used to stir or sample it. Full definition
While remembering the taste of her daily supplement she makes a face, also recalling that her sister loved it so much she would lick the spoon after her dose. (taliand.com)
I think the incentive to lick the spoon also plays an important role in her performance. (mixwellness.com)
Before eating this lovely decadent dessert may I have the bowl to lick the spoon too? (thehomecookskitchen.com)