Wash tomatoes very well and discard their root point.
Cut them into two or any way roughly.
. In a pressure cooker, add all the above mentioned ingredients i.e. tomatoes , ginger, garlic cloves, dry red chillies, raisins, sugar, vinegar and salt together. Alternatively you can cook them in sauce pan or IP also.
Let the pressure go for 5 whistles.
Let the mixture cools completely.
Add it to the blender and blend to a fine puree.
Take a big bowl, keep sieve over it.
Pour the puree over the sieve
Using a spoon or spatula, strain the puree. A clear and fine pulp will also keep on releasing through the strainer. just kept on pressing until no pulp was left in the puree.
Transfer the pulp in a pan and put the pan on a heat between low to medium and let it simmer till the pulp starts thickening and attained the ketchup like consistency.
When the pulp thickens, remove the pan from the heat and let the mixture turn cool completely.
Tomato ketchup is ready. Transfer it into a sterilized jar & keep in the refrigerator