Only some few vanilla recipes are made disable, but almost recipes stay enabled.
or Almost vanilla recipes are made disable, but some few recipes stay enabled.
It's I want do.

P.S.
There is material to write on blacklist or whitelist.
Like as:

...
 <vanillaFurnaceRecipes enabled="blacklist">
  <itemStack modID="minecraft" itemName="cobblestone"/>
 </vanillaFurnaceRecipes>
...