Combine water and lemon juice in a container that can hold all the apple wedges.
Core and peel the apples. Cut each apple into about 8 thick wedges. Submerge
wedges in the lemon-water bath until ready to use. Since the lemon juice prevents
browning, you can prepare them a day ahead of time.
Get the grill hot.
Using tongs, place the apples on the grill. Cook until dark lines sear the apples.
Turn and cook until the apples are warmed through but still
firm, about 1 to 2 minutes per side.