In a large frying pan drizzled with olive oil and a pat or two of butter, fry the sweet potatoes and russets until tender and begin to crisp up.
Add the onion and continue to fry. Once cooked through to fork tender and your desired crispness, transfer the potato combination to a bowl.
Use the same frying pan to brown the chorizo sausage. Once browned, add the potatoes back into the frying pan to rewarm.
Add the chopped cilantro, salt and pepper and spices. Lower heat to low and keep warm.
In another pan, melt a pat of butter and fry an egg or two per person.
Add large scoop of sausage and potatoes to a plate, top with a fried egg (or two) and sprinkle with some additional chopped cilantro.
Add a couple slices of avocado on the side.