What oil does Mastro's Restaurants fry in?
Mastro's Restaurants most likely fries in beef tallow, but the chain has not confirmed it.
In detail: Wagyu beef tallow (low PUFA) for the fryer, per their own dinner and lunch menus, which label the Potatoes & Fresh Veg section "Proudly frying with Wagyu Beef Tallow" (covers French-fried potatoes and other fried veg sides); steaks are broiled/grilled in-house, and Fried Calamari appears on the same menu but the tallow line isn't scoped explicitly to seafood, so treat calamari oil as unconfirmed.
Ordering at Mastro's Restaurants? Build your meal in the app and see its seed oil total before you pay.
Build my orderMastro's Restaurants at a glance
| Fry oil (US) | Beef tallow (estimated) |
| Seed oils | No |
| Beef tallow | Yes |
| Peanut oil | No |
| Seed oil grade | A (3.4 g average per item, 37 items) |
| Is it a seed oil? | Beef tallow: No |
The 5 cleanest things to order at Mastro's Restaurants
Learn this once: a salad with grilled protein and the dressing left off is nearly always the lowest seed oil order anywhere. So the list below sticks to real meals, salads included, never just a water.
| Item | PUFA |
|---|---|
| Shrimp Cocktail | 1.0g |
| Lobster Cocktail | 1.0g |
| Chilled Crab Cocktail | 1.0g |
| Oysters Rockefeller | 2.0g |
| Nueske's Maple Glazed Bacon Steak | 2.0g |
Lower PUFA is cleaner. These are estimates from published nutrition data and disclosed oils; preparation varies by location.
Build your Mastro's Restaurants order
Pick your meal, sides, sauces and drink in the app and see your seed oil total before you order. It logs to your day in one tap. Free on iPhone and Android.
Build my orderWhy the frying oil matters
Most fast-food chains fry in seed oils like soybean, canola, corn, or a blend of them, which are high in polyunsaturated fat (PUFA). A handful still use beef tallow or other stable fats, which are far lower in PUFA. The oil a kitchen fries in is the single biggest driver of how much seed oil ends up on your plate. See the full breakdown on the Mastro's Restaurants report card, or where it lands on the Seed Oil Index. See which chains fry in real fats on Tallow Watch.
Frequently asked
What oil does Mastro's Restaurants fry in?
Mastro's Restaurants most likely fries in beef tallow, but the chain has not confirmed it. In detail: Wagyu beef tallow (low PUFA) for the fryer, per their own dinner and lunch menus, which label the Potatoes & Fresh Veg section "Proudly frying with Wagyu Beef Tallow" (covers French-fried potatoes and other fried veg sides); steaks are broiled/grilled in-house, and Fried Calamari appears on the same menu but the tallow line isn't scoped explicitly to seafood, so treat calamari oil as unconfirmed.
Does Mastro's Restaurants use seed oils?
Not in the fryer: Mastro's Restaurants most likely fries in beef tallow. The chain has not confirmed it. Check the grams for each item.
Does Mastro's Restaurants use beef tallow?
Yes, at least for some items. Mastro's Restaurants most likely fries in beef tallow. The chain has not confirmed it.
Does Mastro's Restaurants use peanut oil?
Not that we can find. Mastro's Restaurants most likely fries in beef tallow. The chain has not confirmed it. If you have a peanut allergy, ask the restaurant directly, because oils and suppliers can vary by location.
What is the lowest seed oil order at Mastro's Restaurants?
Nueske's Maple Glazed Bacon Steak (2.0 g of polyunsaturated fat). Next: Petite Filet 6oz (2.0 g) and Filet 8oz (2.0 g).
Which Mastro's Restaurants item has the most seed oil?
Caesar Salad, at about 8.0 g of polyunsaturated fat as listed.