While the shallots are cooking, separate the cilantro leaves from the stems. Save the leaves in the refrigerator for later. Organize the stems into a single even pile (like a bunch of chives) and slice the cilantro stems into very thin slivers. By the time you finish dicing the cilantro stems, the shallots should be soft and translucent. Add the diced stems to the skillet, along with the sumac, coriander, cumin, ginger, and aleppo chile. Stir, cooking for 1-2 minutes, until the oil smells fragrant.