My chutney is similar but with more ingredients, which change every time I make it . But basically it is chilis, vinegar, brown sugar, garlic, dates and a little water or white wine or beer, depending on what time of day it is. cooked up until it thickens a little. It thickens more after cooling. To that I have sometimes used a little chopped apple or onion, a few raisins, and some cajun seasoning which adds complexity. It will last a few months in the fridge but it is good with anything so hardly ever lasts that long .
