India, Oct. 30 -- Washington (dpa) - Last year, we spent four weeks travelling through the Midwest of the United States, with one clear goal in mind: to eat as much truly authentic American food as possible. And we succeeded. One of the most fascinating experiences was exploring the grocery stores - wandering through the aisles, comparing products and trying new things. One highlight was discovering an entire half-aisle dedicated to peanut butter varieties, right next to just as many jars of dark grape jelly. Since it's made only with the grape juice, this classic American product has a noticeably smoother, more gelatinous texture than grape jam, which is traditionally thicker and chunkier since it's made with whole grapes. I had never seen...