Separate the chard's white stalks from the leaves, and slice the stalks into 3/8 inch slices.
Heat the oil and butter in a large, heavy bottomed pot. When the butter has melted add the leeks and cook, stirring for 3-4 minutes. Add the chard stalks and cook for another 3 minutes., then add the leaves and cook for 3 more minutes.
Add the sugar, pomegranate molasses and wheat berries, mixing well. Add the stock, 3/4 teaspoon salt and black pepper for taste. Cook on low heat for 60-70 minutes, or until the wheat berries are al dente. The base of the liquid should have evaporated, and there should be a caramelizing on the pan.
Remove from heat, and do a taste test to check whether more salt, pepper and molasses is neede.