If you have never had sushi, as I hadn't, go anyway. You can get vegetarian dishes that are so yummy, you won't care that others are eating raw fish! My friend tells me that they have a place similar to this in Chicago, but I know we don't here in Michigan.

There is a little conveyer belt that goes by with a variety of dishes you can pick up anytime you like, or you can call for service and order off the menu. Order unlimited fizzy water for £1 just to be able to continually serve yourself from the soda fountain. There is a color code on the menu to let you know how much each thing is. At the end, the waiter will count up all your colored dishes to give you the bill.

Yo Sushi is a very modern affair. You are greeted as you enter and shown to your seats - high chairs around a central conveyor belt which brings the dishes available before your very eyes. You are asked if you've been before and if not you get a quick run through of how it works. Everything you need is in front of you in a little "work station" - chosticks, soy sauce for dipping, a tiny pot of wasabi (a kind of fiendishly hot Japanese horseradish sauce) and a pot of delicious pickled for cleaning the palate between dishes. There is also a glass and a pair of taps next to you - still and sparkling water. For £1.00 you can have as much as you want. (Very handy if you overdo the wasabi).

A nice idea is to start with some piping hot miso soup - a traditional Japanese broth which has tofu chunks in it.

The dishes have diffrently coloured rims and a little glass dome on top so you can see what's inside. If you're still not sure, there's a little booklet where you sit and everything is explained in there. Dishes start t £1.50 and climb by 50p up to £3.50 - the cheaper dishes are mostly vegetarian and the price increases as you have more exotic cuts of sashimi (raw fish - usually yellow fin or tuna). The California rolls are great - theses are the bigger rolls filled with crab, avocado and cucumber. The other sushi rolls include cucumber and salmon but there are endless combinations. The chefs stand inside the belt and are busy preparing more dishes to come round. Sometimes you get your eye on something and you don't see it again - somebody else has obviuosly fancied it before it's come back round! A couple of desserts also come round, one looked to me like a creme caramel, not sure about the others. I didn't try one on this occasion as I had already spent quite a bit on sashimi dishes.

As well as the water, there is sake available which can be served warm or cold as you wish and is served in the traditional cup and jug. There are soft drinks available too.

Don't be put off by thinking sushi is just raw fish - some of it is and it's really good, but there are other options too. I would be disappointed if people missed the Yo Sushi experience because of a pre-conception.

Prices - differentiated by plate colour - are not cheap if you're hungry, varying between £2.00 and £4.00. The miso soup is usually particularly good (£1.50) and the beers and sake are not too pricy. Still and sparkling water are on tap at a standard £1. Prices range from £2.00 for 4 small vegetarian make rolls, £2.50 for 2 good-sized California rolls, £3.50 for salmon nigiri and £4.00 for a lobster and avocado handroll (the handroll nori is always good and freshly toasted).

Other dishes (yakitori, gyoza etc) are made to order. Obviously no reservations required and the restaurants are spacious enough to rarely have a queue to sit at the bar. Some branches (including Poland Street) also have a Yo! Below with more formal seating.

Should you need it, they also do takeaway and delivery. It can be quiet outside lunchtimes and sometimes a few sad plates go round and round. But overall things move quite quickly and it's good and fresh.