Heat 1.5 TBSP of olive oil in your soup kettle, while heating the oil, chop 1 medium yellow onion and add to the oil. Add dried oregano and thyme and some salt and pepper. Sauté until tender. Add a can of diced tomatoes and heat, stirring together. Add 1 cup of lentils and 5 cups of water. Bring to a boil, put a lid on it and let it simmer for 20 minutes.
Meanwhile, clean and chop red chard, separating the leaves from the stems. When the lentils are tender, add the stalks, then five minutes later add the green leaves. Let cook for about 5 more minutes and remove from heat, adding a bit of salt and pepper and the juice of one fresh lemon.
The flavor is hearty, bright and rich. The lemon really brightens the flavors and helps marry the chard and lentils.