Gajar gobhi shalgam ka achar

Name: Gajar gobhi shalgam ka achar
Ingredients: 500 gm carrots/gajar scraped and cut into two inch pieces; 500 gm cauliflower cut into small florets; 500 gm turnip scraped and cut into two inch pieces; 1/2 tablespoon garlic paste; 1 tablespoon ginger paste; 400 gm jaggery grated or pounded into powder; 1 tablespoon mustard seeds coarsely grounded; 1 teaspoon turmeric powder/haldi; 1 teaspoon red chilli powder; 2 teaspoons garam masala powder; 1 cup white vinegar; 250 gm/1 cup mustard oil; tablespoon salt (or according to taste)