If you're making a BBQ marinade from scratch, you can customize it however you like, but don't overlook a convenient ...
Choose canned veggies labeled low sodium, and buy fruit that's packed in water or its own juice. Is canned food supposed to list an expiration date? Nope, not unless it's baby food or formula.
You may need more lemon juice/zest, depending upon the quantity made and according to taste. Get the canned fruit sorbet recipe. A classic berry slice that balances the sweet and buttery pastry ...
Add a cinnamon stick or star anise and the zest and juice of a lemon or orange. Bake until the liquor has evaporated and the fruit is caramelised. Serve with icecream or yoghurt.