1. Place the ham in a slow cooker and cover with the cider
and syrup. Cook on low for 6-8 hours.
2. Transfer the ham to a plate. Pour the liquid into a
four-cup measuring container.
3. Whisk the cornstarch with 1⁄2 cup of the reserved liquid
on the stovetop over low heat until smooth. Increase the
heat to medium-low. Whisking continuously, add the rest of
the liquid a little bit at a time, until itís fully
incorporated. Keep whisking as the gravy bubbles, until it
is thickened, about 3-5 minutes. Serve with the ham.