
To a large pot add the vegetable oil and heat over medium heat.
Add the fideo and cook for one minute stirring constantly.
Add onions and carrots and lower heat and continue cooking, stirring to prevent the fideo from burning. Sauté until the fideo is toasted and golden brown. (Do not leave pot alone at this stage as the fideo changes color quickly and might burn).
Add the broth, tomato sauce, bullion, cilantro, salt & pepper. Stir to incorporate everything together.
Increase heat to medium-high to bring soup to a boil, then reduce to a simmer, and cook for 10 minutes or until fideo is soft.
Remove pot from heat, and allow soup to rest for another five minutes.
Serve with lime wedges, hot sauce and tortillas on the side.