---
title: Banana Rhubarb Custard Flavour Concentrate By Rainbow Flavours
date: 2026-06-30T10:53:08Z
modified: 2026-07-01T13:01:21Z
permalink: "https://rainbowvapes.co.uk/product/banana-rhubarb-custard-flavour-concentrate-by-rainbow-flavours/"
type: product
status: publish
excerpt: Banana Rhubarb Custard flavour concentrate by Rainbow Flavours delivers sweet banana, sharp rhubarb and smooth creamy custard notes.
wpid: 311009
product_type:
  - variable
product_cat:
  - Rainbow Flavours
featured_image: /wp-content/uploads/2026/06/rainbow-flavours-banana-rhubarb-custard-flavour-concentrate.jpg
featured_image_alt: banana rhubarb custard flavour concentrate by rainbow flavours
timestamp: 2026-07-01T13:01:21Z
tags:
  - variable
  - Rainbow Flavours
---

# Rainbow Flavours Banana Rhubarb Custard Flavour Concentrate

Create a smooth dessert-style mix with **Rainbow Flavours Banana Rhubarb Custard Flavour Concentrate**. The **Banana Rhubarb Custard** flavour combines ripe banana sweetness with tangy rhubarb and rich custard, creating a creamy, fruity and nostalgic profile for DIY e-liquid recipes.

**Banana Rhubarb Custard** is ideal for mixers who enjoy dessert flavours with a fruity twist. It works beautifully as a standalone mix or blended with vanilla, cream, biscuit, caramel, strawberry or other custard-style recipes.

## 🍌 Banana Rhubarb Custard Flavour Profile

Rainbow Flavours **Banana Rhubarb Custard** delivers sweet banana layered with sharp rhubarb and smooth custard creaminess. **Banana Rhubarb Custard** is ideal for vapers who enjoy rich dessert flavours with a fruity, tangy edge.

## 📦 Banana Rhubarb Custard Product Features

- **Banana Rhubarb Custard** flavour concentrate
- Sweet banana with tangy rhubarb and creamy custard notes
- Fruity, creamy and dessert-style profile
- Great for DIY e-liquid mixing
- Can be used as a standalone flavour or blended with vanilla, cream, biscuit, caramel and strawberry notes
- From the Rainbow Flavours concentrate range

## 🧪 Banana Rhubarb Custard Mixing Information

**Banana Rhubarb Custard** is a **flavour concentrate** and must be diluted before use. It is designed for DIY mixing with VG, PG and nicotine shots if required.

## ⚠️ Important Information

This **Banana Rhubarb Custard** product is a flavour concentrate and is **not intended to be vaped on its own**. Always mix before use.

A sweet, tangy and creamy **Banana Rhubarb Custard** concentrate that adds classic dessert flavour to your DIY e-liquid creations.



















































































Rainbow Flavours Concentrate Mixing Chart



























































**Based on 10ml Rainbow Flavours concentrate at 20% flavouring**
**Final bottle size: 50ml**
**Concentrate type: PG-based**

### 0mg Mix — No Nicotine Shot Added



| Desired VG/PG Ratio | Rainbow Flavours Concentrate | Add VG | Add PG | Final Mix |
| --- | --- | --- | --- | --- |
| **40VG / 60PG** | 10ml | 20ml | 20ml | 50ml |
| **50VG / 50PG** | 10ml | 25ml | 15ml | 50ml |
| **60VG / 40PG** | 10ml | 30ml | 10ml | 50ml |
| **70VG / 30PG** | 10ml | 35ml | 5ml | 50ml |
| **80VG / 20PG** | 10ml | 40ml | 0ml | 50ml |





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## With 1 x 10ml Nicotine Shot Added

**Example based on a 10ml 18mg nic shot at 70VG / 30PG**
This would make a **50ml finished bottle at approx. 3.6mg nicotine strength**.



| Desired VG/PG Ratio | Rainbow Flavours Concentrate | Nic Shot | Add VG | Add PG | Final Mix |
| --- | --- | --- | --- | --- | --- |
| **40VG / 60PG** | 10ml | 10ml | 13ml | 17ml | 50ml |
| **50VG / 50PG** | 10ml | 10ml | 18ml | 12ml | 50ml |
| **60VG / 40PG** | 10ml | 10ml | 23ml | 7ml | 50ml |
| **70VG / 30PG** | 10ml | 10ml | 28ml | 2ml | 50ml |
| **80VG / 20PG** | 10ml | 10ml | 33ml | 0ml\* | 53ml\* |





\* An **80VG / 20PG mix is not possible as an exact 50ml mix** when using a 10ml PG-based concentrate plus a 70VG / 30PG nic shot, because the PG content is already too high. To get closer, use a **100VG nic shot** or reduce the final nicotine strength.

---

### Simple Mixing Rule

Your **10ml Rainbow Flavours concentrate already counts as 10ml PG**.

So when working out your mix:

**Final PG amount needed – 10ml concentrate PG – PG from nicotine shot = extra PG to add**

**Final VG amount needed – VG from nicotine shot = extra VG to add**

For best results, shake well and allow the mix to steep if needed, especially with dessert, cream, or complex flavours.