Shatterwing

Dragon wine could save them. Or bring about their destruction.
Since the moon shattered, the once peaceful and plentiful world has become a desolate wasteland. Factions fight for ownership of the remaining resources as pieces of the broken moon rain down, bringing chaos, destruction and death.
The most precious of these resources is dragon wine - a life-giving drink made from the essence of dragons. But the making of the wine is perilous and so is undertaken by prisoners. Perhaps even more dangerous than the wine production is the Inspector, the sadistic ruler of the prison vineyard who plans to use the precious drink to rule the world.
There are only two people that stand in his way. Brill, a young royal rebel who seeks to bring about revolution, and Salinda, the prison's best vintner and possessor of a powerful and ancient gift that she is only beginning to understand. To stop the Inspector, Salinda must learn to harness her power so that she and Brill can escape, and stop the dragon wine from falling into the wrong hands.