Sausage Slammer - Our pork sausage stuffed with a fresh, cheddar-filled jalapeno and wrapped in bacon for a taste you won't forget! Est 1882. Fully cooked. Southside Market is the oldest BBQ joint in Texas! Enjoy the same Authentic Central Texas sausage we've been serving our restaurant guests, on red butcher paper, for generations. Since 1882! Thanks for your business! US inspected and passed by Department of Agriculture. southsidemarket.com. Follow us on social media (at)SouthsideBBQ. We also invite you to order online at SouthsideMarket.com for shipping nationwide! Made with pride, Elgin, TX.