In a big wide bowl mix all flours, all spices, sesame seeds and baking soda, listed under "steamed muthia ingredients". Mix it well.
Add ¼ cup oil and ¼ cup yogurt to flour mixture. Mix it well.
Add shredded zucchini and clean chopped fresh fenugreek leaves to the flour mix. Mix it very well.
Add little water at a time to make muthia dough. The dough consistency should be a little firmer than pizza dough consistency. Zucchini might loose some water which could cause the dough to get softer.
Cover the dough for 10 minutes. While the dough is sitting, start boiling water for your muthia steamer.
Place steamer thali (plate that sits inside the steamer) inside hot steamer so that the thali gets hot as well.
After 10-15 minutes, check on the dough consistency. It should be like pizza dough soft consistency. If it is firmer, use little water at a time to get it right.
Form sausage like shapes from the dough using little oil and place them in the hot thali inside the steamer.
Cover the steamer tight and steam it for 40 minutes on medium to high heat. Make sure the steamer has enough water to last over 40 minutes.
Once the muthias are steamed. Take the steamer off the heat and let it sit for at-least 15-20 minutes while is it still covered.
Once muthias are cooled down, cut them in small pieces and prepare for tempering.
In a wide pan heat 3 tbsp of oil. Once hot, add mustard seeds and sesame seeds.
Once they pop, add pinch of asafetida.
Immediately add cut muthias and mix it well very carefully, making sure that the muthias do not break.
Serve them hot, warm or at room temperature with some hot masala chai!