Central African Style Lamb Stirfry

2 T peanut oil for frying
1/2 tsp cardamom
1/2 tsp ground coffee
1/2 tsp cumin
1 med red onion, sliced
1  - 2" piece ginger root, grated
2 minced garlic cloves
10 oz swiss chard or kale
1.5 # lamb, sliced
1 can chopped tomatoes
1/2 tsp kosher salt
18 tsp fresh ground black pepper

In a wok or heavy skillet, heat oil over high heat.  Add spices, saute until onion is soft.  Add greens and toss until wilted, about 3 minutes.  Remove from wok and reserve.  Reheat pan, brown lamb.  Add tomatoes and salt, simmer for 4 minutes.  Add greens and heat about 4 minutes.  Season with pepper to taste and serve.