Today: the return of Food Fridays—our weekly series about food and how we cook it! Martha Stewart talks about enjoying the good things in life—like dessert—well into old age. We’ll learn about food in the Soviet Union, and how dinner was packed with meaning at a time when there were bread shortages, rationing, and even state-run lessons in table manners. Jack Bishop from America’s Test Kitchen teaches us how to pickle. And this week’s Please Explain is about calories—what they are, why they matter and whether you should bother to count them.