Combine ground beef with barbecue sauce for sliders. Cover and marinate for three to four hours.

Form meat into two-inch (five centimeter) sliders.

Heat grill until screaming hot. Drizzle with oil. Grill sliders for two minutes per side. Do not lift from the grill until they release on their own.

Cook potatoes in lightly salted water. Reserve ½ cup of water and drain potatoes. Return to pot.

Add reserved water, oil, salt, and pepper. Mash until it forms a creamy puree. Taste and adjust seasoning.

Heat oil in a frying pan over low heat. Add onions, coleslaw mix, and salt. Sauté until translucent.

Add pepper and mustard and stir. Continue sautéing until golden in color. Add maple syrup. Stir until it bubbles a bit to let the syrup evaporate.

Pile some lettuce on a plate. Add thinly sliced pickles and tomatoes.

Place a slider alongside, followed by two tablespoons potato puree, and then another slider.

Garnish with two to three tablespoons of relish.