Peel and wash your potatoes. Cut them into 1/2 inch matchsticks.
Put the matchsticks in a bowl and fill with cold water. Let sit for 30 minutes.
In the meantime, work on your burgers. Toast the cashews in a pan over the stove until lightly brown. Remove from heat.
Take your onion, cilantro, garlic, ginger, chilies, and nuts and process in a food processor.
Using a cheesecloth or a fine-sieve, remove about half of the water from the mixture. (Don't squeeze out all of it, because it will give your burger some moisture.)
Add mixture to minced lamb. Add 1 egg, salt, spices (fennel, nutmeg, coriander, cumin) and combine well. Cover and let in sit in fridge for 30 minutes.
Once fries are done soaking, drain water from fries. Set fries on a baking sheet and dry thoroughly with a clean kitchen towel.
Pre-heat oven to 425 F. Add oil to you fries along with your seasonings - chili powder, turmeric, garlic powder, onion powder, black pepper, salt.
Set baking tray in oven and bake for about 30-40 minutes or until golden brown with crispy edges.
When the fries are about half-way done, take them out of the pan and flip them over.
In the meantime, toast your buns in a regular pan or grill pan.
Now form your burgers into patties. Depending on how big or small you want them, they should make about 5-7.
Add a little bit of oil to your pan (medium heat) and add a few patties at a time.
Look at the patty sideways. Once it has gained color about half-way up, turn it to the other side. If you want to add cheese to your burgers, add your slice on top after you flip and put a lid over the patty. This will help the cheese melt smoothly.
Top your buns with whatever condiments/toppings you like. I recommend a thin layer of mayo, a slice of tomato, avocado, lettuce, and some of the fries.
Make sure you take out your fries once they are golden brown and crispy on the edges.