On that note, and i know there is no definitive answer, but do flavour profiles change a lot when paired with other flavours. E.G i have 2 SFTs that I like, let's say Strawberry and Banana, but when paired the sharpness of 1 is changed and the under note of the other is also altered. I am just curious in a general opinion if this changes a lot.
Do flavor profiles change a lot when paired with other flavors? From my experience the answer is yes, no and it all depends. It all comes back to knowing the flavors you have.
I suspect what you are asking has more to do with layering flavors in a mix and how those work in supporting each other.
When I create a recipe my first decision is always to choose the desired flavor profile. Then I design my recipe around that profile.
If I was going to do a mix using your flavor examples (strawberry, banana) my first decision would be choosing which one of those I want for the featured flavor.
Let's say I choose strawberry to be my main flavor note. Next I will decide what percentages to use for each flavor. My recipe might look something like this.
Basic Strawberry Banana Juice
FA Strawberry (Red Touch) 3%
FA Juicy Strawberry 1.5%
FA Banana 1.75%
From experience I know those percentages will give me the strawberry out front and a light banana note on the backside. Each flavor will be experienced as intended.
In my example above note that I used two strawberries in order to create a single strawberry profile. The percentages used determine the type of strawberry I'm going to taste.
I know from experience FA Strawberry (Red Touch) provides all the aspects of a real berry including the not-quite-ripe part. The green note makes it one of the most authentic strawberry flavors around.
FA Juicy Strawberry is the authentic flavor of an actual fresh ripe berry. It lacks the green unripe note of Strawberry (Red Touch).
Using those two together I am able to create a single unified strawberry profile. One that is either more or less ripe. In my example the overall strawberry profile is one that's fresh but not overly ripe (sweet).
FA Banana at 1.75% will offer a light banana note on the backside. FA's banana is a very realistic natural tasting banana. Like real bananas it's not a bold flavor. It is yellow banana, not green, not brown, and not strongly sweet.
If I wanted banana to be the featured flavor then the percentages might be something like this.
FA Banana 4%
FA Strawberry (Red Touch) 2%
FA Juicy Strawberry 0.75%
The banana is now the featured flavor and the strawberries sit nicely in the background. If I wanted to add more of a green note to the banana profile then I would add SSA Ripe Banana. I know from experience SSA banana has that green note.
Lets say I'm happy with how the flavors are working together in the first recipe but I decide it's a boring mix. I might choose to add a bakery note and a cream. Like so:
FA Strawberry (Red Touch) 3%
FA Juicy Strawberry 1.5%
FA Banana 1.75%
FW White Cake 2%
VTA Vanilla Cream 1%
Now I have what I consider to be a well rounded mix with strawberry being my featured flavor, a light banana note to add some complexity to the overall fruit flavor followed by a creamy cake foundation.
From experience I know that recipe will have natural sweetness at about the mid point. Mid point being about a 5-6 on a scale of 1 to 10 (1 being near zero sweetness and 10 being sickly sweet).
Hope that helps!
