 Bosi uses molecular <unk> to create some items on the menu in an effort to enhance their flavours , such as freeze @-@ drying cabbage to create a <unk> . The restaurant has received mixed reviews from critics , but has been listed in The World 's 50 Best Restaurants since 2010 , and was named by Egon Ronay as the best restaurant in the UK in 2005 . The Good Food Guide ranked Hibiscus as the eighth @-@ best restaurant in the UK in the 2013 edition . It has also been awarded five AA <unk> . 
