Keyword Tokenizer Phrase Issue

[Zac Smith]

Hi,

I have a simple field type that uses the KeywordTokenizerFactory. I would like 
to use this so that values in this field are only matched with the full text of 
the field.
e.g. If I indexed the text 'chicken stock', searches on this field would only 
match when searching for 'chicken stock'. If searching for just 'chicken' or 
just 'stock' there should not match.

This mostly works, except if there is more than one word in the text I only get 
a match when searching with quotes. e.g.
"chicken stock" (matches)
chicken stock (doesn't match)

Is there any way I can set this up so that I don't have to provide quotes? I am 
using dismax and if I put quotes in it will mess up the search for the rest of 
my fields. I had an idea that I could issue a separate search using the regular 
query parser, but couldn't work out how to do this:
I thought I could do something like this: qt=dismax&q=fish OR 
_query_:ingredient:"chicken stock"

I am using solr 3.5.0. My field type is:
<fieldType name="keyword_test" class="solr.TextField" 
positionIncrementGap="100" autoGeneratePhraseQueries="true">
                <analyzer type="index">
                                <tokenizer class="solr.KeywordTokenizerFactory" 
/>
                </analyzer>
                <analyzer type="query">
                                <tokenizer class="solr.KeywordTokenizerFactory" 
/>
                </analyzer>
</fieldType>

Thanks
Zac