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Co-fermentation

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when produced with the winemaking methods of the time. It is believed that the practice may also have been adopted because it was found empirically to give deeper and better colour to wines, which is due to improved co-pigmentation resulting from some components in white grapes.
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after fermentation. While co-fermentation in principle could be practiced for any mixture of grape varieties or other fruits, it is today more common for red wines produced from a mixture of red grape varieties and a smaller proportion of white grape varieties.
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The reason why co-fermentation is not more widely practiced is that it "locks in" a certain blend already at the start of the fermentation, which gives the winemaker less possibility to adjust the blend after fermentation.
87:(up to 20% is allowed, but 5–10% is more common) must be co-fermented, if Viognier is used. The reason why Viognier has been kept in Côte-Rôtie (while for example the white grapes 251: 99:
or other red RhĂ´ne wines where they are allowed) is that it adds signature floral aromas to the wines. The popularity of CĂ´te-RĂ´tie has led to
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at the same time when producing a wine. This differs from the more common practice of blending separate wine components into a
79:, while the use of white varieties in red Rioja and Tuscany wine has more or less disappeared. In CĂ´te-RĂ´tie, the red variety 216: 149: 76: 72: 71:
The only classical Old World wine region where co-fermentation is still widely practiced is now the
58:) of using a small proportion of white grapes to "soften" some red wines which tended to have harsh 246: 27: 194: 158: 154: 144: 140: 104: 100: 59: 55: 240: 181: 118:
varietals are indistinguishable from each other, thus necessitating co-fermentation.
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Co-fermentation is an old practice going back to the now uncommon practice of having
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Shiraz-Viognier blends, which are also produced by co-fermentation.
80: 195:"Field Blending: Tips from the Pros – WineMaker Magazine" 153:(3rd ed.). Oxford: Oxford University Press. p.  114:
Co-fermentation is also performed in situations where
214: 50:, and the previous practice in some regions (such as 178:AOC regulations for CĂ´te-RĂ´tie, version 2009-10-28 8: 103:interpretations of this blend, most notably 221: 127: 135: 133: 131: 7: 46:(mixed plantations of varieties) in 14: 95:are hardly found any more in red 224: 252:Fermentation in food processing 83:and the aromatic white variety 1: 268: 150:Oxford Companion to Wine 75:appellation of northern 22:is the practice in 16:Wine making process 193:Miller, Thomas J. 145:"Co-fermentation" 259: 229: 228: 227: 220: 209: 208: 206: 205: 199:winemakermag.com 190: 184: 175: 169: 168: 137: 267: 266: 262: 261: 260: 258: 257: 256: 237: 236: 235: 225: 223: 215: 213: 212: 203: 201: 192: 191: 187: 176: 172: 165: 141:Jancis Robinson 139: 138: 129: 124: 69: 20:Co-fermentation 17: 12: 11: 5: 265: 263: 255: 254: 249: 239: 238: 234: 233: 211: 210: 185: 170: 163: 143:, ed. (2006). 126: 125: 123: 120: 68: 65: 15: 13: 10: 9: 6: 4: 3: 2: 264: 253: 250: 248: 245: 244: 242: 232: 222: 218: 200: 196: 189: 186: 183: 179: 174: 171: 166: 164:0-19-860990-6 160: 156: 152: 151: 146: 142: 136: 134: 132: 128: 121: 119: 117: 112: 108: 106: 102: 98: 94: 90: 86: 82: 78: 74: 66: 64: 61: 57: 53: 49: 45: 40: 37: 33: 29: 25: 21: 202:. Retrieved 198: 188: 173: 148: 113: 109: 70: 44:field blends 41: 30:two or more 19: 18: 116:field blend 247:Winemaking 241:Categories 204:2016-03-29 182:LĂ©gifrance 122:References 105:Australian 73:CĂ´te-RĂ´tie 28:fermenting 24:winemaking 101:New World 97:Hermitage 93:Roussanne 67:Use today 48:vineyards 89:Marsanne 85:Viognier 60:tannins 56:Tuscany 217:Portal 161:  32:fruits 231:Drink 81:Syrah 77:RhĂ´ne 52:Rioja 36:cuvĂ©e 159:ISBN 91:and 54:and 155:186 26:of 243:: 197:. 180:, 157:. 147:. 130:^ 219:: 207:. 167:.

Index

winemaking
fermenting
fruits
cuvée
field blends
vineyards
Rioja
Tuscany
tannins
CĂ´te-RĂ´tie
RhĂ´ne
Syrah
Viognier
Marsanne
Roussanne
Hermitage
New World
Australian
field blend



Jancis Robinson
"Co-fermentation"
Oxford Companion to Wine
186
ISBN
0-19-860990-6
AOC regulations for CĂ´te-RĂ´tie, version 2009-10-28
LĂ©gifrance

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