All about the Loire

3. Red Sancerre is made from this grape (5,4)
5. An appellation known for its good-value Loire Sauvignon Blanc (8)
6. This estate produces the famous Savennières, Clos du Papillon (7,2,5)
8. Famous limestone of the Loire valley (7)
11. Famous sweet wine from Anjou-Saumur (10)
16. Muscadet grape (5,2,9)
17. One of two lieux-dits with cru status in Savennières (6,2,7)
18. Didier Dageneau's famous Sancerre is named after this flinty soil type (5)
20. The red grape used in Saumur-Champigny (8,5)

1. Caillottes, or Oxfordian limestone, found in Centre Loire, is sometimes described as this (11)
2. Good-value alternative to Sancerre (7,5)
4. Sauvignon Blanc and which other white grape can be found in the Pouilly-Fumé appellation? (9)
7. You'll find Chardonnay in this Loire appellation (2,8)
9. The white grape of Loire sweet wines (6,5)
10. Classic (dairy) match for Sancerre (5,6)
12. Muscadet aged on its lees is labelled as this (3,3)
13. A famous Loire soil is named for this Dorset town (10)
14. This appellation shares its name with an American TV medical examiner (6)
15. White grape used in wines from the Gros Plant de Pays Nantais appellation (5,7)
19. The city to fly to for a tour of Muscadet vineyards (6)