Within the EU (other than at times where a country can impose 'exceptional measures', such as during the BSE crisis), EU law requires the free movement of goods, including foodstuffs, across all borders within the Union. So you can certainly take sugar, tea & coffee to any EU country. A few other countries might impose restrictions but they'll definitely be in a minority.
Travel kettles should present no problems anywhere in the world (as long as you remember to take a plug adapter, of course!).