Finely chop onion and grate garlic clove.
Heat large frying pan over medium high heat, when hot, 1 tbsp olive oil.
Add 1 whole red onion or Spanish onion, chopped and sauté over medium heat until the onion is soft and turning a light brown, about 5 - 6 minutes. Add 1 whole garlic clove, grated and continue to sauté for another 2 minutes or until fragrant. Season with 1 tsp celery salt.
Add 2 tbsp Worcestershire sauce and 1 tsp tabasco or similar sauce, 1 tsp grated horseradish and a sprinkling of 1-2 tsp sugar.
Pour in 1 oz vodka and deglaze the pan, scraping up brown bits, add 1 14 oz can chopped tomatoes, 2 tbsp tomato paste, 1/2 cup clamato or bloody mary mix bring to a simmer and cook gently for about 25-30 minutes and then set aside until ready to serve with freshly cooked pasta.