Most lavender grown commercially in France, for essential oil and the perfume industry, is Lavandula augustifolia (vrai lavande) or Lavande latifolia (lavande aspic) or its hybrid lavandin.
Besides the much prized lavender honey (miel de lavande), you may find lavender-flavoured ice cream. It’s often used as a garnish as well.
Lavande Maritime (Lavandula stoechas), native to the Mediterranean, is ‘French lavender’ in the UK, and ‘Spanish lavender’ in the USA. It’s also used for making honey, although it is much rarer.
Images by User:Xemenendura, x1klima