Cholar Dal Er Tarkari is a traditional Bengali dish that combines Cholar Dal (Bengal Gram Lentils) with various spices and ingredients to create a flavorful side dish. Here's a simple recipe:   Ingredients:   - **Cholar Dal (Bengal Gram Lentils):** 1 cup, soaked for a few hours - **Potatoes:** 2 medium-sized, diced - **Coconut:** 1/2 cup, grated - **Green Chilies:** 2-3, chopped - **Ginger:** 1 tablespoon, grated - **Whole Spices:** Cinnamon stick, cardamom pods, cloves - **Cumin Seeds:** 1 teaspoon - **Turmeric Powder:** 1/2 teaspoon - **Red Chili Powder:** 1/2 teaspoon (adjust per spice preference) - **Ghee (Clarified Butter):** 2 tablespoons - **Mustard Oil:** 1 tablespoon - **Sugar:** 1 teaspoon (optional) - **Salt:** to taste - **Fresh Coriander Leaves:** for garnish   Instructions:   1. **Boil the Dal:** Cook the soaked cholar dal with turmeric powder until it's soft but not mushy.   2. **Prepare Tempering:** In a pan, heat mustard oil. Add cumin seeds, whole spices (cinnamon, cardamom, cloves), and let them splutter.   3. **Add Aromatics:** Add grated ginger, chopped green chilies, and sauté for a minute until aromatic.   4. **Add Potatoes:** Add diced potatoes to the tempering. Cook for a few minutes until the potatoes are slightly golden.   5. **Spices and Coconut:** Add turmeric powder, red chili powder, grated coconut, and a pinch of salt. Mix well.   6. **Combine with Dal:** Pour the boiled cholar dal into the pan. Mix everything well.   7. **Sugar and Salt:** Add sugar (if using) and adjust salt according to your taste.   8. **Simmer:** Let it simmer on low heat for 10-15 minutes, allowing the flavors to meld.   9. **Ghee:** Drizzle ghee over the top and give it a gentle stir.   10. **Garnish and Serve:** Garnish with fresh coriander leaves. Serve hot with rice or any flatbread.   This Cholar Dal Er Tarkari is a delightful combination of textures and flavors, and the addition of coconut adds a sweet and nutty dimension to the dish. Enjoy it as part of a Bengali meal.