We love that sweet and sour zip that a good mango chutney brings to curry. But with the high cost of a small jar, wouldn’t a homemade alternative make sense? When Adam Jaffe (of Double Chocolate Sorbet fame) served a lively apple chutney, we realized our orchard-picked Cortlands, simmered with pantry and fridge basics, could do the job. Wouldn’t you know that Adam, an economist, would offer this thrifty solution? We don’t feel so bad forsaking mango chutney, anyway, since we no longer can find our favorite brand. The original Major Grey’s Chutney, invented by Merwanjee Poonjiajee & Sons Pvt. Ltd. and sold under the “Sun Brand” label, has disappeared from the shelves. As…