
There are two things that make this cafe one of the most popular in Sheffield; the fresh, organic food, whose seductive smells drift out from the cobbled courtyard of the Butcher Works, and the energy and cheerfulness of its staff.
The cafe's home - a restored Victorian factory with a distinctive chimney where cutlery makers and grinders once worked - is also unique and part of Sheffield's industrial heritage.
The current occupants are continuing the tradition, showcasing the work of artisans now based on the site in a gallery at the back of the cafe.
Poetry and other literary events are also staged at Fusion in the evenings. I chose it as the venue for my own reading of Cuban poems with Chilean guitarist Sergio Contreras (see Travels With A Pen).
As you enter, you'll be greeted by a cheerful team in maroon polo shirts and green aprons cooking and preparing behind the counter.
No matter how busy they are - and Fusion gets very busy with queues out of the door at lunchtimes - they always have time for a smile and hello.
Fusion's blackboard menu changes daily with hot and cold dishes. Staples and favourites include Moroccan lamb pasties, Spanish tortilla with peppers or goat's cheese quiche - these come on their own or with colourful and wholesome salads. There are always specials, usually a stew or a fish dish among them.
On a cold day, the soups, made from fresh organic vegetables such as spinach and potato, are not only substantial but delicious, and are served with a choice of fresh organic bread baked and sold on the premises, including gluten and yeast free.
Next to the till, you can't help but notice the giant, gleaming coffee machine with its eagle on top. It may resemble something from a 1950s sci-fi film but it also happens to produce one of the best cups of coffee in the city. (I have this on good authority from an Italian friend).
Fusion is also popular with staff at Sheffield Hallam University, The Work Station and other offices in the Cultural Industries Quarter who hold informal meetings there.
Gluten-free orange and polenta cake is a favourite of mine and equally popular with those not on a restricted diet. The lemon drizzle cake and chocolate fudge brownies are also top of my list - but be warned, you won't be able to eat for hours after the latter.
Whichever treat I plump for I like to enjoy it with either camomile and lavender tea from The London Tea Company - or the unusual Chai Green Tea, which has the wonderful aroma of cardamom.
Chef/restaurateur Melvin Jarman is the driving force behind Fusion's success. He's very much hands-on, apron and all, and at 10 am pops out to source his ingredients for the day (without the apron) and like the other members of the team, works tirelessly to maintain standards.
Like other popular cafes in Sheffield, it's virtually impossible to find a table between 1 and 2 pm, and because the food is prepared on the spot, you may have to wait longer than usual - but it's well worth it.
P.S Follow chef Komal on her own blog Girl Who Ate The World. Komal and colleague Oliver also won the Sheffield Telegraph Barista of the Year competition 2011. See Sheffield Telegraph Barista of the Year