In a metal bowl, combine diced cucumber, pine nuts (or almonds), the creamy base (ricotta/labneh), and a drizzle of olive oil; mix well to form the ajo blanco-style component.
In a blender or food processor, blend garlic, remaining almonds/pine nuts, olive oil, vinegar, and a splash of water until smooth to make the ajo blanco sauce, adjusting consistency with water as needed.inferred
Season the ajo blanco sauce with salt to taste and set aside.inferred
Finely dice the raw tuna into small, even cubes.
Combine diced tuna with finely chopped red chili and chives in a bowl; season with salt and pepper.
Use a metal ring mold to shape the tuna tartare on a plate, pressing gently to form a neat layer.
Top the tartare with extra chives and thin red onion rings.
Spoon or pour the ajo blanco sauce around and over the tartare just before serving.
Serve immediately alongside a cold can of Estrella Galicia beer.
Exact quantities and precise ajo blanco ratios (garlic, almonds, oil, vinegar, water) were not stated in the video and have been inferred based on traditional ajo blanco preparation. The creamy base ingredient (ricotta/labneh) is a visual guess since it wasn't explicitly named.