A pantry is useful when you can see what is in it. That means fewer things, in clear jars, bought in amounts you will finish.
Start with what you cook
Write down what you made for dinner over two weeks. The staples that show up more than twice are your pantry. For most kitchens that is rice, one or two dals, atta, oil, and a few things for breakfast.
Buy for a month, not a year
Seeds, nuts and whole grains go stale. Pumpkin seeds keep about six months, hazelnuts about four, granola about eight weeks. Buying a smaller pack more often costs a little more per gram and wastes far less.
Jars and labels
Use glass jars with a tight lid and write the date you filled them on a strip of tape. Keep nuts and seeds away from the stove; heat turns their oils rancid.
If you cannot see it, you will not cook it.
One shelf for breakfast
Keep granola, honey, cacao nibs and seeds together. With curd and a fruit, that shelf is breakfast for the week.