Flat Iron Borough is a specialist steak restaurant on the cobbled Clink Street in Bankside, close to Borough Market, Southwark Cathedral and the Globe Theatre. It occupies a Victorian building whose original windows and exposed cast iron columns give the dining room a strong sense of place.
The signature Flat Iron steak is the menu’s main attraction, presenting an approachable cut with the restaurant’s straightforward focus on well cooked beef. Changing blackboard specials, including a Wagyu steak of the day when available, give returning diners something beyond the core offering.
Beef dripping chips and crisp bone marrow garlic mash are among the best known accompaniments, designed to turn the steak into a complete meal. Other sides and sauces allow each table to shape the order, whether guests keep it concise or share several extras.
A compact, considered wine list supports the steak led menu without making the experience overly formal. Oak tables, vintage chairs, warm lighting, plants and reclaimed Staffordshire blue quarry tiles balance the historic building with the recognisable Flat Iron style.
Address: 11 Clink Street, London SE1 9DG, England
Flat Iron Borough Menu
Steak
Flat Iron Steak
325 kcal
Beef Specials
Smashed Onion Double Cheeseburger
Flat Iron Herd Beef, 796 kcal
35 Day Aged Ribeye
416 kcal
Wagyu Steak of the Day
Ask your server for today’s cut, 446 – 694 kcal
Sides
Homemade Beef Dripping Chips
490 kcal
Crispy Bone Marrow Garlic Mash
543 kcal
Creamed Spinach
425 kcal
Green Salad
210 kcal
Truffled Macaroni Cheese
525 kcal
Roast Aubergine
Tomato, basil, mozzarella, 420 kcal. Available as a main – 9.0
Sauces
Bearnaise
195 kcal
Peppercorn
55 kcal
Homemade Smoked Chilli Mayo
210 kcal
Wild Mushroom
55 kcal
Wines
Available in 175ml / 375ml / 750ml unless otherwise stated.
Silky Italian Rosso
Red
Velvety Chilean Merlot
Red
Smooth Flat Iron Malbec
Red
Juicy Puglian Sangiovese
Red
Dark Cherry Pinot Noir
Red
Mellow Rioja Reserva
Red
Fruity South African Chenin Blanc
White
Zesty Sicilian Catarratto
White
Vibrant New Zealand Sauvignon Blanc
White
Dry Côtes de Provence
Pink
Appley French Bubbles
Fizz
Classic Rich Champagne
Fizz
Softs
House Fizzes
Lime & Mint / Apple & Rhubarb / Rose Lemonade, 52 / 70 / 58 kcal
Cocktails
Aperol Bellini
Bubbles, Aperol, lemon sherbet
Classic Old Fashioned
Bourbon, smoked demerara syrup, bitters
Passion Fruit Collins
Vodka, Aperol, passion fruit, vanilla, soda
Tony’s Margarita
Tequila, Cointreau, lime, hibiscus
Drunken Mule
Overproof pineapple Rum, makrut lime, ginger beer
Raspberry Gin Spritz
Raspberry, elderflower, gin, bubbles
0% Cocktails
Citrus Margarita
Lemon, lime, orange, hibiscus, 91 kcal
Virgin Passion Fruit Collins
Passion fruit, vanilla, lime, soda, 86 kcal
Sober Mule
0% rum, pineapple, makrut lime, ginger beer, 54 kcal
Beers
Freedom Four Lager (4.0%)
Lager
Small Beer Lager (2.1%)
Session
Pillars Helles (4.6%)
Helles
Mondo Dennis Hopp’r (5.3%)
IPA
Verdant Lightbulb (4.5%)
Extra Pale, 440ml
Brooklyn Special Effects Lager (0.4%)
Low
Wignac (4.5%)
Cidre