Wash and scrub the sweet potato. Slice the potato lengthwise, into even slices, using a sharp knife or mandoline.
If using a toaster, place the sweet potato slices in the toaster and toast several times, or until cooked through.
If using the oven, preheat the oven to 400 degrees fahrenheit. Lightly oil both sides of the sweet potato slices, then place them on parchment paper on a baking sheet.
Bake for 30 minutes or until slightly toasted.
While the potato is baking, bring a pot of water to a simmer. Crack and poach the eggs for 3-4 minutes. Remove the eggs from the pot and place in a bowl of room temperature water (while the potato is still baking).
Once the potato has cooked, add to a plate and top with sliced avocado, cucumber, smoked salmon and a poached egg.