1. Heat a sauté pan over medium high heat (on stove or on a BBQ) and add the berries and sugar, stirring until sugar melts. Add the lemon juice and stir in jam, bringing this up to a simmer. Add the Chambord or brandy using a ladle (watching out for steam and/or flames).
  2. To ignite, lean pan toward a gas flame or ignite with a BBQ lighter and allow flames to subside (to avoid flames, reduce heat to low before adding Chambord and return slowly to a simmer). Stir in the vanilla and spoon the berries over the ice cream.