For a pâté-free version, increase the amount of finely chopped mushrooms and spread a thin, well-cooked mushroom mixture around the beef instead.
When buying puff pastry, check the ingredient list to ensure that all fats, flavorings, and additives are suitable for a halal diet.
Unsweetened red grape juice replaces the red wine traditionally used in the sauce. A tiny amount of red wine vinegar can add acidity without adding alcoholic wine, but it can simply be omitted if preferred.
Serve this puff pastry Beef Wellington with mashed potatoes, roasted potatoes, green beans, asparagus, glazed carrots, or roasted vegetables.