Hearty Dinner: Potatoes, Shrimp, and Scallops

I started out with Alia's "Potato Tajine" from cookingwithalia.com, and of course I made changes of my own. I didnt have a tagine (or tajine), so I made this dish in a medium sized pot. The final result was tasty and filling. I will definitely make this again.

One-Pot Potato and Shrimp

1 Chopped Onion
3 Minced Cloves of Garlic
1/2 tsp Cumin
1/2 tsp Paprika
1/2 tsp Ginger
2 tsp Salt
1/4 tsp turmeric
1/2 tsp pepper
1 crushed peeled tomato
1/2 cup Chopped Fresh Parsley
3 Medium peeled Potatoes cut into chunks
1 sweet potato peeled and cut into chunks
1 cup Raw, peeled shrimp
1/2 cup raw scallops (optional)
1/4 Lemon

1) Saute the onion in some olive oil for a few minutes. Set some water to boil.
2) Add in the garlic.
3) Add in the spices and mix well.
4) Add in the crushed tomato and parsley. Stir for a few minutes.
5) Add in about 1 cup of boiling water (more or less) and the potatoes. You may add more water in the cooking process if the potatoes dont have enough to cook in.
6) After potatoes are half way cooked, add in the shrimp and scallops.
7) Once the shrimp has curled and turned pink, the dish is ready.
8) Turn off the heat, squeeze in the lemon, and stir.