Method
To get started, place chickpeas and 1 teaspoon of bicarbonate of soda in jar or bowl, cover with cold filtered water and let sit overnight — 8–12 hours. Drain and rinse.
Combine soaked chickpeas and remaining 1 teaspoon of bicarbonate of soda in a large pot, cover with cold filtered water. Bring to the boil, skimming surface as needed. Reduce heat to medium-low, partially cover, and simmer until chickpeas are super tender and the skins remove very easily — 45–60 minutes. Drain.
Preheat oven to grill at 200℃. Slice the red pepper in half and spread out on a lined baking sheet. Grill for 20 or so minutes until charred.
Blend the garlic, lemon juice, and 1 teaspoon of salt in a food processor or blender until foamy. Let sit. The garlic will mellow out—strain, removing as much liquid as possible. You’ll use this. Set aside the remaining solid garlic, you can use this for cooking.
Add the garlic and lemon liquid to your blender with the tahini and pulse to combine. Add the roasted red pepper, oil and sun-dried tomatoes and blend.
With the motor running, add the iced water, processing until mixture is very smooth, pale, and thick. Add the chickpeas and cumin and process, occasionally scraping down sides as required.
To thin, add ice cubes, start with a few and if needed, add the rest — season to taste with salt, more lemon juice, and more cumin as desired.
Store in an airtight container. Your hummus will keep for up to one week in the fridge.