Sweet/desert stout recipe help

[Blinky]

I've been doing all grain for a few years now but mostly brew IPA or Lagers... I want to dip my toes into the whole sweet desert type stouts, chocolate marshmallow type thing! I also have nearly a kg of brambles in the freezer that I wanted to use.
So recipe, 250g of lactose? A few teaspoons of vanilla extract? Mostly pale with a little chocolate and medium and dark crystal?
Does this sound along the right lines? As I say, I've never made a stout but really enjoy things like brewdog layercake (which I couldn't find the recipe for on DIY Dog)

 

[mdhazell]

I've struggled to get marshmallow flavour into a beer. My recipe calls for it to go in the last 10 minutes of the boil. I end up with a beautiful stout (500g lactose) but not a hint of marshmallow. My recipe uses Golden Promise as the base, chocolate, roasted barley, flaked oats and crystal 240. The next time I make it I'm going to swap the marshmallow for peanut butter (PB2) but am looking at the best way to make sure the flavour comes through.

 

[Tess Tickle's Brewery]

My hubby has just made something similar to this and it's so yummy!

 

[phildo79]

You would probably need to go down the artificial flavouring road to impart marshmallow. Even the pro breweries seem to struggle with marshmallow flavoured beers. Think I have only tried one that I thought nailed it. It was a brown ale by Manchester Marble.

 

[UKSkydiver]

This is the drink that introduced me to not drinking lagers and ultimately to take up the hobby of brewing, so I have a soft spot (geddit?) for this.

Tiny Rebel Stay Puft Porter

They even give you a hint to the recipe

 

[Blinky]

Marshmallow is ot really a flavour though is it? Is it not vanilla....