I have shared the recipe for this dish , if ur mango lover then pls do try this at home.

Peel the mangoes and set aside. Squeeze the mango skins and collect all the juice in another bowl.
In a pan, dry roast peppercorns, fenugreek seeds, red chillies, mustard seeds and cumin seeds till a sweet, nutty aroma releases. This should take 3-4 minutes. Be careful to roast the spices on a slow flame, so as not to burn the spices.
Grind together the roasted spices, garlic, ginger and onions with a bit of water till smooth.
Heat oil in a pan and add curry leaves. Once they start spluttering add the ground mixture along with turmeric. Saute this paste for 8-10 minutes till you start seeing drops of oil on the sides.
Add mangoes, juice from the skins, a cup of water, jaggery and salt. Bring this to a boil and simmer for 5-10 minutes till the gravy thickens slightly. Taste and add more tamarind or jaggery as required