Toast sourdough bread
While toast is heating, cut half of an avocado into small cubes. Place in bowl. Drizzle with fresh lemon juice. Smash avocado cubes into a spread, making sure to leave some small chunks for texture.
Slice your tomato into 1/4 inch rounds.
Once bread is toasted. Place 1/2 the avocado mixture on each slice.
Top with tomato.
Sprinkle with sea salt.
Drizzle with high quality olive oil.