Soak the currants in the sherry.
Meanwhile, heat the butter in a Dutch oven or pot over medium heat. Add the garlic and onions, then season with salt and pepper. Sweat until the onions are very tender, then stir in the paprika and chili powder. Stir in the sherry and currants.
Puree the peppers with 1 cup water until smooth, then add the pureed peppers to the Dutch oven with the tomato sauce. Stir in the almonds and the Beef and Tomato Base, then bring to a simmer and let the flavors combine a few minutes. Adjust the seasoning and remove from the heat.
Cool and store for a make-ahead meal or serve immediately. Reheat over medium heat, garnish with parsley and pass chips for dipping and topping.
Heat the oil in a large pan over medium-high heat. When the oil is very hot, pat the meat dry with paper towels and add half of the beef to the pan. Crumble the beef with a potato masher or wooden utensil. Cook to develop a deep brown color, season with salt and pepper, and then remove to a plate. Repeat the process with the remaining beef. Add the tomato paste to the pan and stir until fragrant. Then add the stock and the browned beef. Stir to combine, then reduce the heat to a simmer.