My current kitchen secret weapon is Japanese pepper or sanshō. It has an amazing peppery, lemony, herby flavor that is unlike anything else I have ever tasted. I love to add it to salad dressings and marinades or just sprinkle it directly on anything I’m eating. The brand I use is S&B and I pick it up from Mistuwa, but you can find it online here. S&B also sell a mean nanami togarashi too, which is great on sprinkled on popcorn or in soups for a little interesting heat.