Fill the slow cooker. In a slow cooker on low add 1 cup of the beer and all of the liquid smoke, hot sauce, maple syrup, onion pulp, garlic, cheddar, Gouda, cream cheese and chicken. Season with a pinch of salt and a few grinds of pepper. Cook while stirring occasionally until cheese is melted and ingredients combined, about 20 minutes. Keep on low and stir to combine. If it thickens, add the remaining 1/2 cup of beer and stir.
Garnish and serve. Sprinkle bacon and scallions over the top of the slow cooker, then serve with a selection of chips, crisps, crostini or Melba toast.