Rinse the samp and beans under cold water.
In separate bowls, soak the samp and beans in water overnight or for at least 6-8 hours.
Drain the soaked beans and place them in a large pot.
Add fresh water to cover the beans and bring to a boil.
Reduce the heat and simmer for about 1-1.5 hours, or until the beans are tender. Drain and set aside.
Drain the soaked samp and place it in a separate large pot.
Add 6 cups (1.5 liters) of water and bring to a boil.
Reduce the heat and simmer for about 1-1.5 hours, or until the samp is tender and the water is mostly absorbed.
Once both the samp and beans are cooked, combine them in one pot.
In a skillet, heat the vegetable oil over medium heat.
Add the finely chopped onion and minced garlic. Sauté until the onion becomes translucent.
Add the chopped tomato and cook until the tomato is soft and well combined with the onions and garlic.
Add the sautéed vegetable mixture to the pot with the samp and beans.
Stir well to combine.
Season with salt to taste.
Continue to cook over low heat for another 10-15 minutes, allowing the flavors to meld together.
Enjoy your meal!