Don't know how we missed this, but legendary kitchen supply store Bartolini has reopened (since November 2010) in a new location, further along Via dei Servi at number 72 (towards Piazza Santissima Annunziata if you are coming from the Duomo). The old location was on the corner of Via dei Servi and Via Bufalini. This is great news for all Florentine cooks:
