"Create a high-calorie, good-tasting protein shake using pea protein powder isolate (unsweetened) 35 g, 1 banana, milk, water, Cadbury Dairy Milk chocolate, and optional mixed seeds. The shake should mask the chalky taste of the pea protein by using chocolate and banana, and should be creamy, sweet, and filling. Use metric units only. Include a recipe title, ingredients, and simple steps. Aim for a high-calorie shake suitable as a meal replacement or post-workout drink."