Richard Hemming writes: Slovenian wine came together in London recently for a mass tasting at Vinopolis. As a category, it has little significance in the UK market, yet performs well at the big tasting competitions, has respectable plaudits from vinous authorities and offers a wide gamut of styles, from kooky indigenous blends to familiar international varietals. Of the latter, some producers play it safe by making varietally correct, balanced, competent but ultimately slightly boring wines - some of the Pinot Grigios were especially uninspiring in this respect. Others were more experimental, with oak-aged Sauvignon Blanc...