The fact that per-capita potato consumption was so much higher in 1950 tracks with what I've observed from german-american areas in the US. I lived in wisconsin

The fact that per-capita potato consumption was so much higher in 1950 tracks with what I've observed from german-american areas in the US. I lived in wisconsin for a bit and grew up as/around a lot of German-Americans, and we consumed way more potatoes than seems typical compared to eg San Franciscans. Potato salad, potato pancakes, potato soup, potato dumplings, german fried potatoes, baked potatoes, mashed potatoes (the latter two not being exclusively german but much more consumed), potatoes au gratin/scalloped potatoes +/- ham (I guess has some French origin as well). Also notable is that a lot of dishes that seem popular in Germany when I went aren't very common in the US in german-american areas as far as I can tell. Spaetzle is basically just a novelty, and I never see schnitzel per-se, but we do have equivalents like chicken-fried steak. We also basically never use the German name for anything except sauerkraut, bratwurst, and strudels, which to my understanding is because the US heavily de-germanized in WW1.