Indian Pineapple Relish - cooking recipe

Ingredients

28 ounces pineapple chunks (in own juice)
1 tablespoon vegetable oil
1/2 teaspoon black mustard seeds
1/2 teaspoon cumin seed
1/2 teaspoon onion seeds
1 teaspoon dried chili, crushed
2 teaspoons ginger, grated
2/3 cup sugar
1/2 cup raisins
1 teaspoon salt

Preparation

Drain pineapple but reserve the juice, chop finely.
Heat oil in a pan, and add mustard seeds immediately to it.
As soon as it begins to sputter, add cumin and onion seeds.
Add ginger and chilies and saute for about a minute until just aromatic.
Add the pineapples, raisins, sugar and salt.
Add 1 1/4 cups of pineapple juice (use the reserved juice and make it up to 1 1/4 cups using water if needed).
Bring to a boil, reduce heat to medium and cook uncovered for 15-20 minutes.