Worth going out of your way.
Portillo's has the BEST Italian Beef, hot dogs, and hamburgers. They boast a fine chocolate cake, but we've only had it in the disgusting-sounding, yet superb Chocolate Cake Shake. Prices are reasonable and the portions generous.
As close as you're gonna get to a Chicago style beef sandwich in SoCal.
On my last visit to the city of Chicago, I sampled different Italian beef and combo sandwiches and all of them were great. When I found out that the Chicago based Portillo's had a restaurant in Buena Park, my buddies and I piled into my car and headed down the 5 freeway. The Portillo's in BP is as close as you will get to a real Chicago style Italian beef or combo sandwich. The place was packed and the food reminded me of Chicago. However, I don't know if it was the location or the city but the sandwiches didn't taste as memorable as the ones in Chicago. First timers, you have to go with either the Portillo's hot dog, the beef sandwich, or the beef combo sandwich.
Good Hot Dogs.
A real Chicago feel! Good hot dogs but not Great! Love the environment and atmostphere. Real casual. Spicy beef sandwich was good but not as spicy as the one in Chicago. I would come back to try other items on the menu. It looks and smell delicious. It's something different in the neighborhood.
REAL Chicago chow in the OC.
Born and raised in the burbs of Chicago (like Villa Park, IL) where Portillo's got its start. Everything on their menu is a signature Portillo item. Of course the Hot Dogs with everything plus sport peppers. Never catsup unless your under 14 years old. The cheeseburgers with all the fresh toppings. Fries and Onion rings always special. Super thick milkshakes. But the 2 things I must have are the Chicago Style Italian Beef sandwich with sweet peppers and the Chocolate cake. Yes Mrs Portillo's triple chocolate recipe at a hot dog joint ! Now if they served "Browns" fried chicken I would live in the parking lot.