Add bourbon, lemon juice, shrub, simple syrup and Angostura bitters to a shaker with ice. Shake and then strain into a lowball glass over ice. Garnish with a herb of choice (sage or rosemary)
Add all the ingredients to your Tesco, Ocado etc. baskets.
Below we’ve got an example more complex tasting cocktail with a shrub made from blackberries, cacao nib and sage. It’s a Kentucky Bramble by @thegameologist which mixes the sweetness of blackberries with the aromatic cacao and sage with bourbon, lemon juice, simple syrup and some Angostura bitters.