Place a colander in a heat-proof bowl and put tamarind blocks inside the colander. Now, pour boiling water at least 2 cups or enough to soak the entire block completely. Set aside for 10 minutes.
Use a spoon or fork to break the block of tamarind into little pieces. Add another 1 cup of cold water to bring down the water temperature. Now use your hands to squeeze all the chunks of tamarind to release all the tamarind juices from the seeds etc. Test the water temperature first before dipping your fingers into it. Don't worry about how much water you are using, we'll cook it down eventually.
Pick up the colander and allow all the tamarind juice to strain into the bowl. Transfer the tamarind juice to a cooking pot. You can repeat the previous step if you think there is more juice to be extracted.
Add all the seasoning (minus the date syrup) and boil the tamarind juices at medium flame for 20 minutes. Your tamarind juice should be reduced to half its original quantity.
Now add date syrup, date paste or any other sweetener you prefer. Let the chutney simmer for another 10 minutes at medium-low heat.
Turn off the heat and do a taste test to check salt, heat and sweetness. Adjust salt according to your liking.
Allow the chutney to cool down uncovered. It'll thicken a bit more as it cools. Transfer into waterproof jars and store in the fridge.