Common ingredient: Yellow belly, hornswoggler, 7-layer cake

[chobint]

I am very confident that these three beers share a common ingredient that lends them a peanutbuttery/cakey/biscuity taste.

The yellow belly bottle, however, says clearly that there is no peanut butter or biscuits added as adjunct to achieve these flavors. Any idea what sorts of magical malt combinations might be at play here?

 

[Queequeg]

I think yellow belly uses a flavouring. I say this because I cant see any malt combination producing that flavour and to my palette it tastes synthetic.

 

[Rakey]

I think yellow belly uses a flavouring. I say this because I cant see any malt combination producing that flavour and to my palette it tastes synthetic.

What a flavouring can be used to give that peanut/biscuit taste that isn't actually peanuts or biscuits then?

 

[Queequeg]

synthetic flavorings

 

[chobint]

Seems weird to brag about using synthetic flavoring over the real thing.