Combine all dals. Wash and soak in approx. four cups of water for at least 30 minutes. Drain the water.
Put three cups water into a pressure cooker and add salt, turmeric, and ginger. Cook on medium high heat.
When the pressure cooker starts to steam, turn the heat down to medium and cook seven minutes.
Turn off the heat and wait until all the steam has escaped before opening the pressure cooker. Dal should be soft and mushy.
Mix dal, if needed, and add more water to adjust thickness to your liking. Cook another three to four minutes on low heat. Dal will thicken as it sits after cooking. So leave it more liquid than you want it to be.
Add garam masala and amchoor powder.