Hearty side for fall/winter
Boiling potatoes for ten minutes in salted water gelatinizes the starches partially before high heat hits the exterior. Skipping this step leaves the center hard while the outside burns on a hot grill. Submerging them in water that registers a rolling boil ensures rapid heat transfer, shortening total preparation time to forty minutes. Cutting tubers into uniform one-inch chunks guarantees even thermal penetration during this initial softening phase. Cooling the pieces slightly before threading prevents the hot starch from crumbling around the metal or bamboo skewers.
Brushing olive oil and minced garlic onto the boiled surfaces creates a hydrophobic barrier that promotes crisp browning over direct flames. Fresh rosemary releases fat-soluble aromatic compounds that bind efficiently to the two tablespoons of oil during the basting process. Dual parallel skewers stop individual potato chunks from spinning freely when flipped with tongs. Replacing olive oil with melted butter alters the smoke point significantly, requiring lower ambient temperatures to prevent acrid flavors from developing on the surface.