The smell of the rain

The smell of the rain

When you live in a country where rain is a regular occurrence, it becomes a fact of life, almost an annoyance. Particularly in areas where precipitation is a year round affair and where the prospect of uninterrupted spells of rainfall implies inconvenience, damp and blocked sunlight for long periods of time, the subject of rain becomes a topic of distaste; a phenomenon which necessitates the need to temporarily flee one’s normal abode in search of warmth and sunshine.

Not so in places where rain is not so common. Such as Malta during the long, hot, dry summer season. A place where week after week of warm to hot sunny days prevail almost uninterruptedly between late spring and late summer: around twelve weeks of hot, dry weather which burns the countryside dry and lets you wonder at the resilient patches of green vegetation which defy the furnace-like quality of what they face and survive almost without a drop of soothing water for sustenance, except for the occasional heavy dewfall which is absorbed through their leaves.

Those of us who inhabit such areas are generally sensitive to a particular sensation which is most magnified when it rains after a long dry period. I term this sensation, the smell of the rain. A wonderfully rich and refreshing earthy smell which brings great joy. An indicator of change to come. The first airborne drop of relief in advance of wetter days ahead.

I used to think that this sensation was something that was simply an undefinable feeling. Some primitive switch to which humans in dry places are programmed to respond. Until an architect friend of mine told me that there is actually a word for it! Petrichor. A combination of two distinct words, petra and ichor designed to embrace and encapsulate the feeling that has been arousing my senses since childhood.

Petra stands for stone while ichor stands for the more esoteric fluid that flowed in the veins of the Gods in Greek mythology! So there you have it: a heavenly fluid mixing with the very earth on which we lesser human mortals stand. Producing a sensation of what flows through the Gods’ own veins! No wonder the feeling of euphoric refreshment which the smell of the first rain brings.

Researchers theorise that the smell of the rain, or petrichor is caused by a combination of factors. Part of the smell derives from an oily substance exuded by certain plants during dry periods which is absorbed by clay and rocks on the ground. When it rains after a lengthy dry spell, the oil is released into the air along with another compound, geosmin, a metabolic by-product of certain bacteria which is emitted by wet soil, producing the distinctive scent. The smell can be further compounded by ozone which is generated by lightning during a thunderstorm.

The purpose of the oil is to slow down seed germination and plant growth during the lethal dry season. It is only when the rain dissipates the oil in the ground that the seeds get the go-ahead to germinate. This would indicate that the plants produce the oil in order to safeguard the seeds from germination under duress.

Just imagine what is taking place whenever you feel this exuberant high! As each raindrop lands on the porous surface of the sun-baked ground, air trapped in the pores forms small bubbles, which float to the surface and release spray-like aerosols.  Such aerosols carry the scent, as well as bacteria and viruses from the soil. Gentle rainfall tends to produce more aerosols which explains why petrichor is stronger and more noticeable after light rains.

As to why it excites us so much? Scientists believe that humans react so joyfully to the smell of the rain because our ancestors may have been hard-wired to rely on rainy weather for survival.

Blood of the Gods splashing on dry stones or complex organic chemicals released by plants and bacteria? Whatever the origin, the magic remains for all those who like me are sensitive to its timeless pleasure.

 

A clothes line amidst the fennel stalks.

A clothes line amidst the fennel stalks.

A hot August morning on Comino. The rising sun’s heat is tempered by the occasional straggling cloud providing a few overcast seconds of relief and a stiff breeze of Majjistral, Malta’s prevailing north west wind which is nature’s alternative to refreshing air conditioning.

We are on our annual pilgrimage to this desolate little island. Arid, but full of life. Ruggedly beautiful with ever changing scenery. A two and a half square kilometre island. One tiny corner of which, its Blue Lagoon, is over-run by up to five thousand visitors daily. Leaving the rest to people like us. A fair deal, I think. Amazing how even on such a small landmass, you can just climb the small hill overlooking Cominotto Island and all evidence of the crowds dissipates into thin air. No sight, no sound. Nothing.

We have climbed from the inlet of San Niklaw and walked across Comino’s main thoroughfare, Triq Kemmunett. At the location of the old Bakery building we take a sharp right and climb steeply up Triq il-Gvernatur, the road leading to the imposing Santa Maria Tower, part of a network of coastal watchtowers built by the Knights of St. John.

Our final destination today is the small mooring place at Wied Ernu, a tiny cleft in the island’s southern coast which used to serve as the landing for boats from Malta during the time of the twentieth century agricultural colony on Comino.

The colony is long gone, but its remains, mostly in ruins and disrepair are spread all over the island.

On the way back, a small sign of human activity. One of the handful of people which stayed behind when the colony disbanded in the late 1960s. True Comino-born and bred. Hanging clothes to dry on a line. Surrounded by stalks of wild fennel.

A beautiful sight. A sign of humanity’s resilience and adaptability. And oneness with nature.

The fresh breeze, the aromatic smell of ripening fennel seeds and the slight waft of damp, clean laundry hanging out to dry in the wind. Elements which make me return to Comino year after year.

Using Nature’s discarded Bounty: making home-made Carob Syrup.

Using Nature’s discarded Bounty: making home-made Carob Syrup.

In most Maltese households one is sure to find the ubiquitous jar of “Gulepp tal-Harrub” or carob syrup, an elixir guaranteed to soothe the cruellest of coughs, whose popularity is passed on from generation to generation.  Like most things traditional, however, the home-made varieties so matter-of-factly produced by our ancestors have made way to commercially produced products so that while most people continue to purchase and use the syrup, they have lost the link with its natural source and with it the skill to produce their own at home.

Following last July’s blog entry in which I pondered on the wonders of carob trees and the pleasure of munching some fresh carob pods cut from an old tree, I decided to carry out some research on making Carob Syrup, and on discovering the relative ease with which it can be made, I decided to give it a try and produce enough to last me through the next twelve month cycle until the next carob pod harvest.

My entry today proposes to enthusiastically share my successful experience at making home-made gulepp tal-harrub in the hope that I might entice some readers to try it for themselves thus using a few more of the hundreds of thousands of carob pods which go to waste year after year.

The first step was to source a decent quantity of pods. I found an old, pod-laden tree in a field adjacent to the University and quickly filled a bagful from just a couple of branches. Each pod weighs around 20 grams so around 50 pods are necessary for a kilogram. The pods are already ripe so early in August and the tree had already shed hundreds on to the ground below. The one hundred-plus pods I collected did not even make a dent on the tree’s bountiful output and I felt good that at least a minuscule fraction of its free and generous produce was being put to use instead of wasting on the ground.

Once home, I spread the pods on the table, removed loose twigs and leaves, and then took them in handfuls to the kitchen sink for a thorough rinse under running water. After patting them dry, I used kitchen scales to weigh a kilogram of pods and placed the pods onto a baking dish for roasting in the oven. I used a very high oven temperature (just a notch short of full) for around 15-20 minutes until the pods turned a bit crisp and brittle and started exuding the roasted-woody smell reminiscent of roasted chestnuts.

After 50 minutes I took the pods out of the oven and let them cool. Meanwhile I filled a sizeable pot with two litres of water and proceeded to break each pod into little pieces by hand and throw it into the water. I covered the pot and let the pods soak for 24 hours to release their flavour and juices into the water. The water started to turn brown almost immediately. The liquid eventually formed the basis of the syrup which was produced on the following day.

After 24 hours had passed, the mixture was placed on the cooker hob, brought to the boil and simmered gently for one hour to release more juice/flavour from the pods. By the end of the hour the liquid was very dark having absorbed the oils, sugars and flavours of the pods. The smell was divine. The pod fragments were then filtered off by sieving and the remaining liquid was put to the boil again after having 1 kilogram of sugar added. Once it reached boiling point it was left to simmer gently for 90 minutes, receiving a stir every now and then.

The heating reduces the amount of water in the solution leading to a thickening of the liquid until it reaches a syrupy consistency. Once ready, it is recommended that the syrup is transferred hot to sterilised jars and sealed for eventual use.

I have already received a number of ideas of variations to the above recipe which is time consuming but ultimately simple to make. Some have suggested using one litre of water with one kilogram of carob pods and using less sugar, preferably brown. The addition of bay leaves, cloves, anisette or brandy have also been suggested, while for better storage, one other suggestion is to pour a layer of scotch on the syrup before sealing the jar to lengthen its storage life.

 

         

What are the benefits of Gulepp tal-harrub? You can either enjoy it as a refreshing year-round drink by diluting a couple of tablespoons of it in water, either cold or warm depending on the season. In terms of health, it serves as an effective expectorant, hence its popularity as an elixir for coughs. It is also a strong antioxidant, slowing down cell degeneration whilst also reputedly reducing levels of “bad” cholesterol. And it tastes good!