Frozen Salmon Tartare with Classic Marinade

cubes: Atlantic salmon. marinade: canola oil, dijon mustard (water, mustard seeds, vinegar, salt, citric acid, sulphites), relish (cucumbers, sugar, vinegar, salt, red peppers, spices, mustard seeds, celery seeds, potassium sorbate, xanthan gum, colours (tartrazine), polysorbate 80), water, horseradish, capers (capers, water, salt), vinegar, salt, red peppers, sugar, spices, concentrated lemon juice, xanthan gum, natural flavours. Contains: Atlantic salmon, mustard, sulphites.