Thickeners for raspberry pie?

Michele, the Cook's Thesaurus is a handy resource. Thanks!

Samira - yes, my Mom used Arrowroot too. Now I'm wondering what the guidelines are for using arrowroot vs. cornstarch in terms of quantities. Anyone know?

Another trick that my mother used to use is Arrowroot since unlike cornstarch it does not need to come to a boil to stiffen the juices.

Make raspberry filling 30 minutes before assembling your pie. Drain the liquid that accumulates in the raspberry mixture and reduce it over medium heat so it's more of a syrup than all that extra water. Then pour your syrup over the raspberries and fill the pie!

Something I do in pie emergencies (because, truthfully, it's hard to tell how much thickener you're going to need until the fruit releases its juice) I hover over the oven with a turkey baster. Once the pie starts to bubble out the top vents, if it looks too liquidy, I slurp out some of the liquid and reduce it on the stove. (You can also add some starch-based thickener at this point, but be careful not to add it to hot liquid as it will clump - make a slurry.) I then pour it back into the pie through the vent using a gravy boat. Nobody knows.

BTW, our local pie baker uses the crumbs from rolling out the pie dough as a thickener - pre-buttered flour bits, right? Works like a charm.

Something I do in pie emergencies (because, truthfully, it's hard to tell how much thickener you're going to need until the fruit releases its juice) I hover over the oven with a turkey baster. Once the pie starts to bubble out the top vents, if it looks too liquidy, I slurp out some of the liquid and reduce it on the stove. (You can also add some starch-based thickener at this point, but be careful not to add it to hot liquid as it will clump - make a slurry.) I then pour it back into the pie through the vent using a gravy boat. Nobody knows.

BTW, our local pie baker uses the crumbs from rolling out the pie dough as a thickener - pre-buttered flour bits, right? Works like a charm.

I have never cared for cornstarch as a thickener for fruit pies. My farm-wife aunts and grandmother used bread, cake or cookie crumbs. If you use bread crumbs, make sure they don't have Italian seasoning or any flavor like that that might mix strangely with your fruit.

Thank you all so much for these replies! I think I'll try the tapioca, the pectin, and the macerate-simmer methods, and see what I like best.

Saw this and I think it might work without using a thickener.
http://www.thekitchn.com/hate-soggy-fruit-desserts-try-this-simple-trick-191993

Hilarybee, it is great with sour cherries! I forgot to say, if you use the almond paste, you can reduce the sugar in your berry mix a little. This is just my preference, but I like things on the tart/sour side, so I'd reduce any sugar in the fruit by 25%. The almond paste will provide a lot of sweetness.

pegeen, I love the almond paste idea! I'm trying that this weekend with sour cherries. Genius!

Another vote here for tapioca. Another tip (you could do both this and the tapioca) that prevents juices from soaking into a bottom crust is to blind-bake the bottom crust. Let it cool completely, then line it with a layer of cold almond paste, rolled thin. Almond is great with cherries but would also work with other stone fruits or berries. You can buy the almond paste or it's pretty easy, just more time-consuming, to make your own:
http://candy.about.com/od/nutcandyrecipes/r/Easy-Almond-Paste.htm
Enjoy your pie!

I like using tapioca. Use the recipe on the side of the box.

Our raspberry pie uses plump fresh berries.
Make a glaze by heating a cup of berries with 1/2cup water until soft and mushy. Put through a sieve to remove seeds. Stir in a couple tablespoons of corn starch dissolved in cold water and heat until you have a glaze.
Half fill a baked pie shell with fresh berries, drizzle with half the glaze. Repeat. Chill until set and serve with fresh whipped cream.
Soooo different than a cooked pie.

I’ll bet gooseberries would be a good combination, tool

Oh, now I get the pectin. Yes, another fruit high in pectin would be a good idea. My grandmother used to cook elderberries and apples for a jam--elderberries alone produced only a syrup.

My friend, a chef and baker, uses tapioca pearls in his berry pies. I've never tried it, but his pies are awesome.

If anyone has used pectin in pies, I'd like a report! How is the texture compared to cornstarch or tapioca? Any recipes?

Hi!
I use Instant (or quick cooking) tapioca in my berry pies, it helps to maximize thickening. Should you try it, it needs to be mixed with the pie filling ingredients and sit for about 10 minutes to allow the beads to soften and start to absorb the juices; later, while the filling is baking the beads swell and become transparent, ending with a filling that is not too runny or thick, with a beautiful glossy sheen. Note: don’t confuse instant with regular tapioca. I use 3 tablespoons instant tapioca per 4 cups berries. On the other hand I’ve heard rave reviews using pectin as hardlikearmour mentioned. Link to my onsite berry pie for reference: http://food52.com/recipes/6603-himalayan-blackberry-pie

Another idea, and I have no idea how well this would work. Carageenan is used as a thickener--and it is tasteless. It is a dried seaweed, widespread, but used in Ireland.I've had it served as carageenan pudding.

I would try tapioca, too. It thickens the pie, but you don't get the 'frog egg soup' texture that you might expect. I would try the tapioca without pectin, because that should be enough to produce a good consistency. If it doesn't, then try adding some pectin--but I think you might have trouble with the timing. Doesn't pectin have to be cooked for a certain amount of time and no more? The label on the tapioca box should give some info on how much tapioca to use. If it doesn't check 'Joy of Cooking' under pies.

I'd consider adding in some pectin in the form of a grated granny smith or a puréed kiwi fruit. I'd also consider switching to tapioca.

Also, some cooks recommend taking about half or more of the fruit/sugar/thickener mixture and cook it until it thickens to your liking. Then mix it within uncooked fruit. Then bake.

I sometimes see pie recipes that call for using cake crumbs or breadcrumbs to soak up liquids exuded by fruit. Might want to try that.