mmm-yoso!!! is the name of this blog about food. Cathy is writing today; Kirk is busy.
The Mister and I were in the Pacific Beach area and it was time for lunch. We planned to park and walk. Finding a spot on Cass Street was serendipitous. We didn't have to walk very far.
Big Jim's Roast Beef & Subs opened as a Food Truck/pop-up about March 2021 and has steadily built a following of its New England Style slow roasted style Top Round sandwiches, ultimately opening this storefront in September. They still Pop-Up at the Wednesday Ocean Beach Farmers Market and the Thursday Oceanside Sunset Market.
A simple menu. When you order, toppings are described and you can decline or ask for an ingredient 'on the side'.
Junior Beef Sandwich ($9). This sandwich is very large; the in house roasted top round, sliced thin and served medium rare, the beef chilled. This has wonderful flavor and texture. It is served on a butter grilled burger bun with a horseradish mayonnaise and American cheese. We asked for the BBQ sauce on the side. 
French Dip ($16). Apologies for the photo. The aroma of the roasted beef was amazing. Again, thin sliced beef, cooked more medium, served warmed with Provolone cheese. Great sandwich, easily shared.
The Italian bread roll, sesame-seeded, was fresh, flavorful and sourced locally from a bakery in Little Italy. The jus had bits of meat in it and was not salty. Quite perfect.
The BBQ Sauce had a nice 'tang' and the grilled onions were sweet. Each was added as a condiment at the end bites of the sandwiches.
We will definitely try the onion rings next time…because there will be return visits. If you are from the East Coast, you will have memories evoked.
Big Jim's Roast Beef & Subs 4508 Cass Street Suite B San Diego 92109 (858) 352-6762. Website
Seating out front.