GrubHouse Diner is a family-friendly burger restaurant in Trichardt, styled after a 1950s American diner with a South African twist. You eat hand-pressed beef patties seasoned with a house spice blend, alongside milkshakes and shareable baskets. The diner opened in 2020 during the pandemic, starting as a single location in Trichardt and expanding to multiple branches.

The space includes a kids' play area, making it a practical choice for families. The menu features burgers, ribs, wings, and pizzas, with milkshakes and craft sodas for drinks. The diner's branding leans into a playful, retro aesthetic, with vibrant colors and a mascot named Grubbii Grub.

GrubHouse positions itself as a place for gatherings, whether for birthdays, casual meals, or group outings. The diner is located in the Terra Nova Village Mall, accessible for local families and visitors. The beef patties are ground fresh and hand-pressed daily, a detail the kitchen emphasizes.

The diner's expansion since 2020 reflects its focus on slow, steady growth rather than rapid franchising.