The phrase "nice char" is a slang term used to compliment someone on their character or personality. It means that the person is kind, pleasant, or likable. Full definition
Got nice charred edges, perhaps because of sugars in ale. (epicurious.com)
The high heat of the grill will help break down the fibrous texture of the stems, and add nice charred flavor to the earthiness of the kale. (epicurious.com)
From my experience of cooking lamb, It will be better if pork is first baked then broiled for last 2 - 3 minutes for nice char. (chefdehome.com)