El sandwich-on Tx: Authentic Puerto Rican Sandwiches & Flavorful Food Truck in Killeen, TX

Sandwiches were great, the taste and the size were really good. Price is good for the size. I wish I would have taken pictures, but I was so excited about it, that I forgot. I got full with just one half of the Sandwich. Will definitely go back. Recomendado. ????????????????

This food truck is Puerto Rican through and through — and 100% Gringo-friendly. Don’t let the Spanish fool you. They speak English, they’re welcoming, and they make sure you’re taken care of. No language barrier, no stress — just ridiculously good food. Will follow this trailer anywhere! I had the Pollotrami (yes, chicken and pastrami — and yes, it’s incredible). My husband had the Tripleta, stacked with flavor and gone in minutes. These sandwiches don’t play around. Service? Friendly and fast. Food? Fire. The only thing missing was a walk along La Guancha to burn off the damage — but that’s how you know it was worth it. Don’t overlook this truck. Don’t overthink it. Just go. You'll be planning your next visit before you finish the first bite. - De Gringa de Guaynabo

Hands down, the best conch sandwich I've ever had! The flavors are out of this world; crispy, tender, perfectly seasoned. It genuinely transports me straight to Puerto Rico with every bite. The service? 10/10. Warm, welcoming, and full of island vibes. Do yourself a favor and try the full lineup of sandwiches. Each one is packed with flavor and love; you won’t regret it!

We tried the Tripleta, it was very tasty and warm, it made me feel like I was back in the island. The customer service was exceptional. Thank you so much! Also the Guanabana and Tamarindo juices are delicious, very refreshing.

Amazing service!!! Is like you are in P.R. Sitting at that table eating your sandwich and they are so good!!!!!100/10 RECOMMENDED!!!

Sweet lady very nice smile good energy, and I can tell she enjoys what she does. The flavors are nice the most important to me is texture and this sandwich has it the meat is soft and the bread is just thick enough to hold all the juice in. Awesome sandwich. Half had me full I was happy to have some for later.

I walked in expecting a sandwich. What I got was a spiritual experience wrapped in sourdough. Let’s start with the bread — warm, lightly toasted, and clearly baked by someone who’s been personally wronged by bland carbs. It crackled like a polite applause when I bit into it. Inside? Layers of pastrami so tender I briefly considered writing it a thank-you note. The chesses were melted to silky perfection — like it just got a massage and is now living its best life in sandwich form. There was also some lettuce (crisp, probably from a local farm run by a man named Carl who sings to his crops), a tomato slice that actually tasted like a tomato (a rarity), and a mayo ketchup sauce I can only describe as “what confidence tastes like.” By the end, I was full, happy, and wondering if I could legally marry this sandwich in at least one U.S. state. 10/10 — would risk crumbs in the car again.