Place rosemary in a shaker and gently press down with a muddler several times to crush the leaves slightly
Add the pear juice, lemon juice and maple syrup to the shaker
Add some ice and replace the lid
Shake for about 10-15 seconds
Strain over ice into your glass
Top with your choice of mixer (ginger beer, ale, or sparkling water)
Garnish with pear slice and rosemary if desired
